How do I set the Boot Camp partition as a Virtual Machine?

I have installed Windows XP Pro via Boot Camp. I have installed Boot Camp 3.0 on Mac. How do I get one to use the other?

I only get the Express or Custom options for Windows installation in Parallels. If I choose Custom, I have to enter my Windows Product Key yet again, and the accompanying message leads me to think Parallels just intends to install another instance of Windows within itself, and not use the Boot Camp installation.

When I installed Parallels I was not asked to tick any boxes or make any selections then.

TIA

 

Witch version are you running??

I'm running 512O and this how i did it. In custom you normally don't have to give your key anymore

Select in "File" a new vm, then "Custom", follow next steps and then "use an existing..

Search for your bootcamp drive and follow instructions...

 

Thanks Jacky, How do you have Build 5120? I downloaded the latest Build from the Parallels website where it is listed as Build 4560.