editing boot.ini

http://support.microsoft.com/default.aspx?scid=kb;en-us;Q289022

If you are getting the option of which OS to choose, I think you must have installed a second copy of XP instead of formatting and replacing the existing OS.

Check if you now have 2 versions of XP, and if so I think you would be better to start again.

Here is a good tutorial to help you.

http://www.theeldergeek.com/xp_pro_install_-_graphic.htm

>right click on My Computer
>go to Advance tab
>click on settings button in startup and recovery
>uncheck time to display list of operating system
or you can leave it check and set time to 3 seconds this way it gives you a chance to hit F8 to go into windows setup if you ever have to. That's the way I have my system config.