Great article on life-hacker about Windows Performance tweak myths.

Mythbusting: Debunking Common Windows Performance Tweaking Myths

Registry cleaners, memory optimizers, and Vista settings... oh my.

From the PowerShell team blog

PowerShell Team Blog blog entry on the Linux Magazine

Bash vs. Vista PowerShell from Linux Magazine

PowerShell Script Center

Cannot hibernate Windows XP machine "Insuffienct Resources Exist to Complete the API"

For me, this was happening on a Lenovo T61 with 2GB of RAM... and for every time that I tried to hibernate.

Microsoft Knowledge Base Article (KB909095) : The computer occasionally does not hibernate and you receive an "Insufficient System Resources Exist to Complete the API" error message in Windows XP with Service Pack 2, in Windows XP Tablet PC Edition 2005, or in Windows XP Media Center Edition 2005.

This problem typically occurs when the computer uses 1 gigabyte (GB) or more of RAM.

Hotfix for KB909095

Update 9:41PM: Hotfix worked great.

Microsoft Windows startup Registry Settings

INFO: Run, RunOnce, RunServices, RunServicesOnce and Startup:

I believe this is pretty much a bulk of the information set by Xteq X-Setup. For those who don't want to make the purchase for a very simple edit, the following is the except from the Microsoft KB article

General order of loading:

1. HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunServicesOnce
   
2. HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunServices
   
3. <Logon Prompt>
   
4. HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce Not supported in NT 3.51 and ignored by XP and 2000 in safe mode
   
5. HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
   
6. HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
   
7. StartUp Folder
   
8. HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce Not supported in NT 3.51 and ignored by XP and 2000 in safe mode
   

However,

With the exception of the HKEY_LOCAL_MACHINE\...\RunOnce key, all keys and their entries are loaded asynchronously. Therefore, all entries in the RunServices and RunServicesOnce keys can potentially run at the same time.

Entries in the HKEY_LOCAL_MACHINE\...\RunOnce key are loaded synchronously in an undefined order.

Because the HKEY_LOCAL_MACHINE\...\RunOnce key is loaded synchronously, all of its entries must finish loading before the HKEY_LOCAL_MACHINE\...\Run, HKEY_CURRENT_USER\...\Run, HKEY_CURRENT_USER\...\RunOnce, and Startup Folder entries can be loaded.