File - Contiguous Allocation
File - QuickView all
File - Short Names
File - Unrecognised open in Notepad
File - Unknown
File, Folder - Edit Connection (ME)
File, Folder - Refresh
Folder - Change Properties
Folder - Edit
Folder - Move Start-up folder
Folder - Rename or Delete Special
Free Space

Contiguous File Allocation

To optimise the file system for running multimedia applications goto:

Hkey_Local_Machine\System\CurrentControlSet\Control\FileSystem

and add the following Dword value:

"ContigFileAllocSize" with a value of: "0x000001F4(500)"

reboot.

QuickView all Files

You can add the QuickView selection to ALL files by editing the Registry.
Run Regedit and go to:

HKEY_CLASSES_ROOT\*

Create a new subkey and name it: "QuickView" (no quotes).
Now highlight QuickView and double-click on its "(Default)" String in the right hand pane, type an asterisk * and click OK.
Exit the Registry Editor and open Explorer and right-click on any file.
You'll notice the new QuickView command.
 
On the negative side, if Quickview is already allocated to a particular file you could end up with two Quickviews in the context menu.

Friendly "Short" Names

When I am in Explorer, I can save a file such as "1995 Income Tax Returns". But, when I return to Excel to open that file, I will find something like "1995In~1.xls".
Now, if you wanted to save several files with the prefix "1995 Income Tax" you would have a mess on your hands in a hurry, not to mention that you wouldn't be able to decipher the short names.
Complete the following steps, goto:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\ Control\FileSystem

Right-Click the right-hand pane of the Registry Editor window. On the context menu, select NEW, Binary Value.
Type in, NameNumericTail , and press ENTER.
Double-Click the entry you just created, and then type zero (0) as the complete binary value.
Restart Windows.
Now, this undocumented technique will assure that the short file names will resemble the long file names as much as it is possible. Windows 95 will make sure that no two files will have the same long or short name.

Open Unrecognised Files in Notepad

To make all unknown files open in notepad by default go to:

HKEY_CLASSES_ROOT\*\

In this key create a subnew key called: shell
In this shell key create another new subkey called: open
In this open key modify the default string value Data to read: "&Notepad"
 
Select the open key again and create another new subkey called: command
Modify the default string value to read: "Notepad.exe %1"
 
Now all registered file types will have the option on their context sensitive menus (right click) to open the files in notepad, and all unrecognised file types will open in notepad by default when double-clicked.
The above text file can be modified to install, for example, Open with Word97, or to add Paint to every files context sensitive menu
 
Here is a reg file all set to do the work for you.
Download: Open in Notepad

Unknown files

A file of unknown type has a special miscellaneous type in the Windows registry,under HKEY_CLASSES_ROOT/Unknown
To make this key editable from the folder options/File Types dialog,
Create a new key in HKCR called .unknown or something.
Set the (default) setting to "Unknown".
Then open the Unknown key and set the (default) to 'Unknown File Type' or however you want unknown files to be described.
Then you can add context menu options such as 'Open with Notepad' or 'Open with PaintShop' just as you would for any other filetype.
You may need to reconfirm the 'openas' action as the default.

Edit File-Folder Connection

When you save an HTML document from a website, any images, scripts, sound files, etc that belong to that document are saved in a folder with the same name as the document.
Windows ME links the document and folder together so that if one is deleted or moved then the other is deleted or moved.
It is possible to sever this link by going to:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer

In the right pane look for the entry NoFileFolderConnection

Change the binary value from 00 00 00 00 to 01 00 00 00

To do this select the entry, right click, select modify

Refresh Files/Folders

If you'd like Win95 to refresh your files/folders constantly, open Regedit and go to:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Update

In the right-hand pane right-click on UpdateMode, select Modify, select 01, and change it to 0.
Click OK. Close Regedit and restart Win95.

Change Properties Of Forbidden Folders

Go into the registry editor and type in the name of the folder (or shortcut) that you wish to change.
The file should appear under:

HKEY_CLASSES_ROOT\CLSID\.

Now go over to the side where it should say Default Information and the name of the folder or icon.
If, say, you are looking to change the name of the icon that starts IE, which is on your desktop under the name "The Internet", you would search for The Internet.
Then where in the information area, you double click on the icon, and it will bring up a dialog to change the information. Then change it to the name you wish. To change an icon, under where it says "SHELL32.DLL,3" or whatever it says, change it to the name of the DLL or the name of the icon, and if in a DLL, then add a comma, and the number of the icon. (Count from the left, first icon counts as 0).

Edit essential folders

To change the name and/or location of some of the essential system folders such as: Desktop, Fonts, Programs, Send To, Start Menu, etc. open up the Registry Editor, and go to the following SubKey:

HKEY_CURRENT_USER/Software/Microsoft/Windows/CurrentVersion/ Explorer/ShellFolders

Simply edit the data of your choice!

Move Start-up folder

This Registry editing will move the Start-up folder from the Start Menu\Programs folder to a different location, let's say Windows (default Win95 files folder).
The programs located in the \Start-up folder will still run, but the Start-up folder will be in a different directory (Windows in this case).
This helps if you don't have anything in the Start-up folder, getting it out of your way. The folder is just relocated, not deleted!
To do this, open Regedit, and go to:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders

The right-hand window contains the path to the current location of the Start-up folder (the default is: Windows\Start Menu\Programs\StartUp).
Change this value to Windows to make Start-up disappear forever!
This is valid for all Win95's default folders, you can change their location to anything you want.
Example: change Win95's fonts location from Windows\Fonts to Fonts.

Rename or Delete Special Folders

 This setting allows you to rename and delete special folders (such as the Recycle Bin) as if it was a normal folder by right-clicking the icon.
Set the value of "Attributes" in the appropriate key below to "70 01 00 20", you will then be able to rename and/or delete any special folders by right-clicking them.
Recycle Bin
[HKEY_CLASSES_ROOT\CLSID\{645FF040-5081-101B-9F08-00AA002F954E}\ShellFolder]
Search the [HKEY_CLASSES_ROOT\CLSID] key for any other folders you want to modify.
70 01 00 20=enable, 40 01 00 20=default

Free Space

Tip supplied by Max (Endeavor)

"LOW FREE SPACE"
Follow this way: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer

Edit -->
New -->
DWORD Value
name: NoLowDiskSpaceChecks
value: 1