text: hey no problem .. if u have  atleast two drives in ur system ur data wont be lost except ur installed softwares such as MSword ..\n\nbe sure u do back up(copy paste ) ur valuable datas to the d drive\nor in to other drive\n\ni think ur os sits in c drive.. copy all ur data to d drive.\nnow restart ur system after inserting ur winxp cd.\nthe system runs the set up files for win xp. at the time of installing ur xp \nshows eg..\nc   150000mb    \nd    126548mb\nwat u have to do is place the cursor on c drive and press d . this will delete all the files in the drive. after deleting \nthe screen looks like\nfree 15000mb\nd      11256mb\nnow place the cursor on free space and press enter\nthe next question will be about formating\nchoose ntfs (for better performance) and press enter\nnow the system starts installing the winxp.