Uninstalling Vista on Multi-boot System

Hi there, I recently had a nasty trojan/virus on my computer that completely rendered XP useless. Since I did not have the XP CD with me, but the Windows Vista Upgrade CD, I upgraded to Vista but created a separate partition on the harddrive. With the help of this forum, I cleaned the XP part and now that XP is up an running fine, I wish to uninstall the Windows Vista and reformat that part of the hard drive so that I can acess it in XP. I did a basic search online and on microsoft's website but the directions for removing Vista are not clear and the steps that I went through that it listed did nothing. Hopefully someone here can help me, since I trust this forum. Here's is the basic info: I have two hard drives in the computer, but the second is soley as a backup and for storage of files - thus if it will help, I can remove this hard drive before I do anything. I also have all of my files from XP backed up on this harddrive. The main hard drive is in two partitions: C:/ is the one with Windows XP - it has 18.4 GB left of 61.8 GB E:/ is the one with Windows Vista - it has 121 MB left of 12.6 GB

Read here, then post back if you have any questions: http://www.tech-recipes.com/rx/1040/vista_…l_boot_machine/

How to edit boot.iniRight click on My Computer and select Properties
Click on the Advanced tab
Under Startup and Recovery, click the Settings button
Click on the Edit button
Notepad will open with the contents of boot.ini in it.