Very nice setup and a great case.
You can always hit "Prt Scrn" to put a screen shot (full desktop capture) in your clipboard and paste it into an app ("Alt" + "Prt Scrn" for top window capture only) or use one of the many
free sceen capture products.
I just noticed that you are running Win7 - Win7 includes the snipping tool screen capture app.
Are you running the 2 x 640 WD's in RAID0? They would perform quite well.
You can get hooked on folding so watch out but it would be great if you joined the team.
Also,
HWC has a folding contest on right now so you could win a GTX 260.
Folding info
here.
You could even fold some serious bigadv units with your setup btw. The bigadv units require a fast powerful setup. bigadv setup info
here.
Hope you join the team, Cheers.