Temet_Nosce
I have been considering upgrading my PC but already have a 180Gb HD...any reason I cannot use the same one? Would I have to format it?
I assume that you mean can you use the existing disk if you replace the mobo, or put the disk in a new system, without having to completely reinstall Windows?
In either case, assuming that the 180 is the only disk in the system, the answer is - possibly.
If you have an installation CD for XP (or Win 2K) you can try the following:
Install disk in "new" PC, then boot off installation CD. Choose the "Install" option initially, then "repair existing instance". What "should" happen is that windows wil install sufficient drivers to recognise whatever mobo / chipset / cpu / vga adapters etc are present and allow you to start windows and install all the appropriate drivers.
This has worked for me in the past, although I won't guarantee it always does!
Whatever you do, ensure that all your data is backed up BEFORE starting anything - you may find the XP "file and data migration wizard" useful, although simply copying the relevant folders from documents and settings is quicker and better!
SD