How to remove an OS from the startup bootlist

[ultim]

Hi
ive just reisntalled Windows xp on a different harddrive and now everytime i boot up i get a list of 2 Windows XP to boot up from.
How do i remove one of them and make it boot up the correct one automatically?

thanks

 

[ruffneck]

tools, folder options, show hidden files and protected OS files, will be in your root Drive proberly C:\ a file called Boot.ini, open it up in notepad and remove the line that points to the old OS