Atleast to me this is totally cool, I'm just a computer hack thats knows just enough to be dangerous, and too cheap to pay for real tech support.
For a about 2 years I had a 80GB HD which held my Win XP (home), apps, and all documents and settings. That was getting full. I purchased a 320GB HD and instead of just partition-copy the 80GB to the 320GB, then trashing the 80GB, I got a bright idea that I wanted Win XP operating system and all apps on the 80GB (C:), and the "documents and settings" for all users to reside on the 320GB (D:).
After lots of research, I found out the best way to configure this is to create a "winnt.sif" file on a floppy which is read while Win XP installs. On your Win XP install disk there is a "setup manager" application that walks you through each setting that can be configured which auto-feeds Win XP as it installs (i.e. product key, timezone, language, etc.) This is all stored in this "winnt.sif" file. The only thing that is not added by the manager application is a line entry: profiledir=d:\documentsSettings
Of course before you start, back up all user data files and such. Pop the floppy with the winnt file in the drive, and Win XP CD in it's drive. Sit back, smokem if you got em, because like a standard install it takes about an hour..... except you don't need to be there to enter any input information!
When it finished, it was configured liked I expected! Win XP on the C: drive, and the documents and settings for all the users on the d: drive. When you nav to "My Computer" and select "My Docs...." the path is "D:\Documents........" This is really slick. Now I have a vast "wharehouse" for all the users and shared files (Which gets large thanx to my teenagers mp3 files).
After Win XP is all updated and app are installed, re-populate each users documents and settings from the backup you did before. This took me a few tries to install, but worked.
This one tip will help you sleep better tonight
A few seconds are all you need to get a better night's rest.