uninstall Grub and bt4

[badger1802]

I'm an IS major and a bit of a newbie at linux and have had a lot of fun with backtrack. I had it installed as a dual boot for the ability to inject using my wireless card but now have an RT73 USB so I am using a virtual machine and want to uninstall the bootloader and Backtrack completely but am not quite sure how to get rid of Grub. Do I have to remove it before uninstalling backtrack or do i need to modify the MBR from windows?
some info on the system

Dell xps m1330
dual boot with backtrack, and windows 7 pro
grub loads first then gives the option to continue to the windows boot loader.


Thanks in advance for the help!!

[Archangel-Amael]

Post in the correct section.
The how to section is as it states not for asking questions.