I have XP pro as my operating system but do not have a disk and am having problems with it. I have a copy of XP Home and want to save the data I have but install XP Home instead. Just wondering how to do this without losing any data.
Thanks.Why not just borrow an XP Pro CD and do a Repair Install of XP  ? ?
A Home CD can't be used on a Pro install and VICE versa...I had someone fix my computer a few years ago and think it was a pirated version since i cant do any windows updates. I have an OFFICIAL home version and would like to use that instead.Then by all means backup ALL the data you need from that drive format and do a CLEAN install...
Assemble all your device Drivers prior to doing so and remember that all Windows Updates will have to be DLoaded and installed afterwards...

NOTE: If your install CD includes SP1 you should be able to just DLoad SP3 and install it...this will save the chore of doing SP2 first and save valuable time.
Make sure your protection apps are installed and updated before connecting to the web...an unprotected machine can get infected in minutes...Thanks a lot for the info what do you mean by assembling device drivers? Sorry this is my first time doing any thing this major on a comp and dont want to mess any thing up and not be able to recover.drivers for external an internal devices such as video,sound,scanner,camer,ect......  If some one has made this machine such as dell they would also have them on there site if you are UNABLE to find the disk.Use DriverMax: http://www.innovative-sol.com/drivermax/ to back up all drivers.
It'll let you reinstall them later.you spiked my interest please tell me what are the capabilites?Did you go to the link?just did so it will only work for xp and vist dud hu?  So it basically looks at your hardware in the registry an finds new drivers for it?  ?  What is windows 2003?Finding new drivers is not the point here, since in general it's not recommended to update drivers, unless there is something wrong with them.
The whole point is:
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You can also export all your current drivers (or just the ones that work ok) to a folder or a compressed file. After reinstalling Windows you will have everything in one place!
[...]
After reinstalling Windows all drivers will be back in place in less than 5 minutes - sparing you of searching, inserting disc after disk and losing precious time. The Import Drivers wizard allows you to install all the drivers that you exported earlier. The entire operation might take up to 5-10 minutes.