Hi guys, Just got given a new HD from work with Vista Business pre-installed (no install DVD). Has not been run/activated yet so is not paired with a mobo. I have the product key. I want to install it into my existing PC that runs XP and then dual boot. Know enough to understand that if I plug it into my PC as a second drive both MBRs will be independant of each other (on seperate drives) so how will I get a dual boot option? Think it would be easy if I had a a new clean HD with an installation DVD. Can't find any other info on the web with a similar scenario. Any advice would be gratefully appreciated