Question about OS migration from 1 HDD to a RAID system.

[iSTRONG]

Basically, I'm quickly running out of space on my SATA WD Raptor drive and i'd like to add another similar drive to double my storage. I also would like it to be a in RAID 0.

The problem is i don't want to have to reinstall Vista. So is there a way to add the new drive and have my OS migrate from the single drive onto the 2 raided drives?

My motherboard is an Asus P5K deluxe.