Vista 64 bit install over Vista 32 bit?

[moparjoe]

I want to install a 64 bit vista on a drive that has 32 bit vista on it. How can I do it? How can I get rid of 32 bit version on hard drive?

 

[Scotteq]

Boot to the Vista 64 DVD - Select Install and point at the drive with your existing installation. OK the warnings... etc etc etc..

Your original install and data will be put into a folder called WINDOWS_OLD. YOu will be able to access/retrieve your data, but you will have to reinstall your apps.

 

[Jonmor68]

Boot in with the Vista 64 dvd and start the instalation.
For more information on choices go to http://support.microsoft.com/kb/932795
Scotteg just beat me to it.