Any user can move any hard drive from System A to System B...and have minimal problems accessing data files
. Running programs or accessing programs is a different matter.
Additionally...any files which are stored in the Docs & Settings folders
...will probably require taking ownership of the files, due to the way Windows treats system files. Taking ownership is a simple procedure and easily accomplished.
How to take ownership of a file or folder in Windows XP - http://support.microsoft.com/kb/308421
Windows 7 Take Ownership - http://www.blogsdna.com/2159/how-to-take-ownership-grant-permissions-to-access-files-folder-in-windows-7.htm
FWIW: It matters not...whether the drive is a slave or master (if PATA drives) when it is accessed, the rules will be the same regarding access. If the drives are SATA, there is no master/slave consideration.