Scroll down on teh first one (( VX5-A1B )) and you will see you can put your own hardware and that is great i would pick that with these settings
((
WARNING: only buy it if you realised you don't need two kidney ,only one ))
16" WXGA 1366x768 16:9 Glossy
Standard Manufacturer Dead Pixel Warranty : $0 ( they possibly screwed pixels with that glossy shit monitor )
Intel C2D T9900 3.06 GHz 6MB 1066 FSB 45nm 35W: $585 (( nothing better then a solid c2d CPU its great and his performances are outstanding and you don't wanna spent extra cash for QC

)
IC Diamond 24 Carat Thermal Compound on both CPU/GPU : $43 ( you mustn't ever save on coolers buy the best one you will need cooling for this machine

)
500GB 5400rpm SATA II (solid HDD you don't need TB's i tell ya its a waste of empty space )
Webcam is great no need of changing
no need of external HDD because they put you that USB 1.0 slow one -_- trust me
and you will get OS on him but i suggest you download Vista Home Premium (( a great OS i had it but spends alot of RAM ))
SO CALCULATE ITS PRICE !!!!!1!!!!11