This is the list of tricks I often forget:

There is nothing private about them but they don't rate a special public page. They will probably go out of date as people take out the old bugs and put in the new...

Making XP boot without a logon sequence:

At a DOS prompt type: CONTROL USERPASSWORDS2
Select: Advanced
Uncheck "Users must enter a user name and password to use this computer option"
When you 'apply' it will ask you for the user/password

.jpg files insist on defaulting to .jpeg

Edit the registry:
[HKEY_CLASSES_ROOT\MIME\Database\Content Type\image/jpeg]
"Extension"=".jpeg" becomes ".jpg"

Outlook Express won't spell check

To solve this problem, you need a copy of csapi3t1.dll and put it in "Program Files\Common Files\Microsoft Shared\Proof" then reboot. Check that "Always check spelling" is enabled in Tools, Options, Spelling.

The csapi3t1.dll file is included with Windows XP, it simply isn't installed by default. Try the i386 folder on the Windows XP CD. (If there isn't a Windows XP CD, the installer should have created an i386 folder somewhere on your hard disk.)

To use the version provided with Windows XP, click on Start, Run, then type:
expand "c:\pathname\i386\csapi3t1.dl_" "c:\Program Files\Common Files\Microsoft Shared\Proof\csapi3t1.dll"

Internet Explorer cuts off the favorites menu

It thinks that you aren't using them so you don't want them.
Uncheck "Enable Personalised Favourites Menu" on the Advanced Options page

The location of the hosts file under XP etc.

C:\WINDOWS\system32\drivers\etc\hosts

Tweaking the extra keys on the keyboard

eg to change the calculator button to Editor 95 change
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\AppKey]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\AppKey\18]
"ShellExecute"="C:\\Nigel\\Seiki\\Editor95\\Release\\Editor95.exe"

I found a good list as:

Key	Function	Name	Value
1	Back (Internet browser)
2	Forward (Internet browser)
3	Refresh (Internet browser)
4	Stop (Internet browser)
5	Search
6	Favorites
7	WebHome	Association	http
8	Mute volume
15	Mail	RegisteredApp	Mail
16	Media	Association	.cda
17	My Computer	ShellExecute	::{20D04FE0-3AEA-1069-A2D8-08002B30309D}
18	Calculator	ShellExecute	calc.exe
24	Mute microphone
25	Lower microphone volume
26	Raise microphone volume
27	Help
28	Find
29	New
30	Open
31	Close
32	Save
33	Print
34	Undo
35	Redo
36	Copy
37	Cut
38	Paste
39	Reply
40	Forward (mail)
41	Send
42	Spelling checker
43	Toggle dictation and command/control
44	Toggle microphone
45	Corrections