Thought so. Jim said something about looking in a file called "boot.ini" and there will be lines of code relating to the two OS in there, and just earse the line that relates to the previous install.
I know when it would boot up after installing 2k, it would ask me what I wanted to boot into - 1: Micorsoft Windows 2000 Pro, or 2: Micorsoft Windows and give me 30 secs before it automatically went into 2k....