600$ maximum, could you guys work with that?
Something like this:
http://i53.tinypic.com/i2vkb8.jpg
Coupon code "HARDOCPX316A" gives $10 off the X4 955.
Could be made cheaper to make room for buying Windows if you need to.
Also, which state you live in matters, since some charge tax, which would put it at about $650 instead of $600.