ofcourse! its something your teenage child could do as well , provided he follows the instructions.
680sli board huh...chances are you might need to install chipset driver during windows install.
1|open case side panel
2|locate the HDD's that are in RAID 0
3|go into BIOS and select SATA configuration as AHCI
4|power down
5|replace raid drives with the new 600GB drive
6|power up - insert win7 install disk+follow steps to install.
7|x86 if you have 2~3GB's of ram - x64 if you have more than 3GB's of ram
you know, come to think of it - if its a 680sli board i think it could be the chipset is failing on to have a glitchy raid 0 array
more here:
http://forums.nvidia.com/index.php?showtopic=60042
http://www.evga.com/forums/tm.aspx?m=868731&mpage=1
a lil more reading leads me to think that all nvidia chips/controllers are dodgy lil buggers
http://forums.nvidia.com/index.php?showtopic=64219
hope all this helped