Media Player - DVD's
Media Player - Remove Visualisations
Menu - Order
Modem - Initialisation string
Modem - Speed Boost
Modem - Timeout
Monitor - Manually Set Refresh Rate
Mouse - Adjust Double-Click Sensitivity Area
Mouse - Middle Button
My Computer - Rename
My Documents - Assign a different folder as default

Media Player - DVD's

This tweak will allow you to play DVD movies using Windows media player.

Run Regedit and Navigate to the following folder:

[HKEY_CURRENT_USER\Software\Microsoft\ MediaPlayer\Player\Settings]

Create the following "String value":

EnableDVDUI Give it a value of: yes

Restart your PC and insert a DVD disk into your DVD drive, open Media player, click on File & Open DVD.

Media Player - Remove Visualisations

If you have downloaded and installed a visualisation and then decide you do not really like it deleting the visualisation from the windows media player folder does not stop windows media player from still showing it as an option in the visual effects list, in order to remove it from the list you have to edit the registry

Create a new folder on your desktop to keep removed files and reg files as backup, call this folder "removed visuals"

Go to C/Program Files/Windows Media Player/Visualizations

and move the appropriate .dll and any related files to the "removed visuals" folder

Open regedit and go to

HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/MediaPlayer/Objects/Effects

Here you will find keys relating to the visualisations, click on the key of the visualisation you want to remove then on the toolbar select File and then Export, give the file a name that identifies the visualisation and save it to the "removed visuals" folder

Now open the key of the visualisation you want to remove and then open the properties key. Make a note of the classid number, the format looks something like this example

{0A767E66-4D5E-11d5-A8AF-00105AC582C2}

Select the key of the visualisation you want to remove again and press delete.

Now go to

HKEY_CLASSES_ROOT/CLSID

and look for the key with the number you copied down

Select this key, on the toolbar select File and then Export.
Give the file a name that identifies the visualisation and save it to the "removed visuals" folder

In this key are 2 subkeys, InprocServer32 and TypeLib, open the InprocServer32 key and check that the default data points to C:\Program Files\Windows Media Player\Visualizations\name Of Visualisation.dll

Re-select the key with the long number and press delete Now when you open windows media player the visualisation has gone from its list

Note:
I have done this myself on windowsxp with success

Menu Order

It's easy to reorder the items on any Windows 98 cascading menu by holding down the mouse button and drag a highlighted file or folder up or down the list. With this tip it's even easier to force the entire list into permanent alphabetical order.
Go to;
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\
Explorer\MenuOrder\StartMenu\&Programs\Menu Highlight the Order entry in the Contents pane, then delete it. The list will be in alphabetical order the next time Windows opens.
You'll find a similar Menu subkey under each of the &Program subkeys Accessories, Games and so on.
Follow the same procedure to alphabetise those lists, too.

Modem Initialisation string

To change the Modem Initialisation String go to:

HKEY_LOCAL_MACHINE\System\currentControlSet\Sevices\Class\Modem\0000\init

and change setting to the new values.

Modem Speed Boost

To give your modem a speed boost when connecting through Win95's PPP Internet protocol, you may want to make a small change to the Registry.
Open Regedit and go to:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\NWLink\
Ndi\params\maxsockets\max and change the value number from 255 to 1020.
It may help especially if you have a slower modem (14.4 kbps).

Modem Timeout

To increase/decrease the Modem Timeout, go to:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Class\
Modem\XXXX\Settings

Where XXXX is the number of your modem (example: 0001):
Inactivity Timeout=30
Default Inactivity Timeout is set to 30 minutes.

This little tweak will reduce the amount of Timeouts you may experience.

Run Regedit and Navigate to the following folder:

[HKEY_LOCAL_MACHINE\System\CurrentControlSet\ Services\Class\Net\000x]
Double click on: Slownet
Change the value to: 00

Manually Set Your Monitor Refresh Rate

To manually set the monitor refresh rate go to;

HKEY_LOCAL_MACHINE \System\CurrentControlSet\Services\Class\Display\0000\DEFAULT

Right Click on the right pane of the Registry Editor, and click on "String Value".
Enter the name "RefreshRate"
Double-click on RefreshRate and enter the value -1 for automatic rate settings, or a number specific to the refresh rate. (i.e. 75 or so, refer to your video card or monitor documentation for information on refresh rates.)
Click OK and then restart Windows.

Adjust the Double-Click Sensitivity Area

This setting controls the amount of movement allowed between clicks, for two clicks to be counted as a double-click.

Open the registry and find the key:

HKEY_CURRENT_USER\Control Panel\Desktop

Create two new string values named:

'DoubleClickHeight' and 'DoubleClickWidth'.
Set the these values to equal the size, in pixels, of the double-click area.

For example, the setting may look like:
DoubleClickHeight "30"
DoubleClickWidth "30" Restart Windows for the changes to take affect.

Mouse Middle Button

To use a Logitech (or compatible) middle Mouse button as a double-click,
open Regedit, and go to:

HKEY_LOCAL_MACHINE\SOFTWARE\Logitech\MouseWare\CurrentVersion\
SerialV\0000

In the right-hand pane, modify "DoubleClick"="000" to read: "DoubleClick"="001"

Or maybe you have this other version:

HKEY_LOCAL_MACHINE\Logitech\Mouseware\CurrentVersion\Serial\0000
In the right hand pane, double-click the "Double Click" key and change the value from "000" to "001" (no quotes).

Renaming "My Computer

 There are actually TWO ways to do this; one is done right on the Desktop, while the other involves the Registry Editor:

Rename MY COMPUTER via Desktop:
1. Right-Click on My Computer icon.
2. Select Rename from Context Menu.
3. Type in your computer's new name, and press Enter.

Rename MY COMPUTER via Registry:
1. Open up Registry Editor, and go to the following:
HKEY_CLASSES_ROOT\CLSID
2. Locate the binary data string that identifies the My Computer entry:
My Computer {20D04FE0-3AEA-1069-A2D8-08002B30309D}
3. In the right pane, right-click on Default Name.
4. Choose MODIFY, and the Edit String dialog appears.
5. Type in the new name in Value Data, and choose OK.
Close the Registry Editor, and reboot your machine

Assign a folder instead of My Document as the default folder:

HKEY_CLASSES_ROOT\CLSID\{450D8FBA-AD25-11D0-98A8-0800361B1103}
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders\Personal
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders\Personal
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\
User Shell Folders\Personal

You have to replace My Document with a valid Path, example C:\Windows\Desktop.
To change MyDocuments in MS Word, open MS Word, click Tools\Option\File Location Tab, there customise it as you please.