I will be using the computer for internet use, some 3d games (Minecraft, Civ V, tf2) and that's pretty much it.
Comp #1:
AMD Quad Core
 16 GB RAM
 Windows 7 HOME Premium or Windows 8
 2 TB (2000 GB)7200-RPM Hard Drive
 20X Dual Layer DVD Burner
 Integrated Video/PCI-E 16X Slot
 Tower Case w/ATX Power Supply
 HD Integrated Sound Controller
 10/100 High Speed Ethernet
 1 Year Parts/5 Years Labour Warranty
Comp #2
INTEL Core i3
 Windows 7 Home Premium or Windows 8
 1 TB (1000GB) 7200 RPM HDD
 8G RAM
 20X Dual Layer DVD Burner
 Integrated/ PCI-E 16X Video Slot
 Tower Case W/ATX Power Supply
 Integrated HD Sound
 10/100 Ethernet
 1 Year Parts/5 Years Labour Warranty