You have done a parallel install and wish to get rid of the corrupt one. All you have to do is to delete the corersonding line from boot.ini file. For details, read the example from the following MSKB article:

Q289022 -"HOW TO: Edit the Boot.ini File in Windows XP"

Good Luck,

Cetin


Trying to unweave, unwind, unravel
And piece together the past and the future,


T. S. Eliot