That looks pretty good!! Except, the CPU is the OEM version, which is no different from the retail version, except that the OEM version has no heatsink and fan included.
Also, the motherboard uses AGP for its graphics interface, which is fine, and will give great gaming performance, but its less 'futureproof' than getting a motherboard that has a PCIE graphics interface.
A heatsink is basically a heat radiator that takes the heat produced by chips, like the CPU, and radiates away from the chip. In newer CPUs a heatsink is paired with a fan that take the heat from the heatsink and blows it away from the cpu
Intel E6750...........PSN: ELBATROP
XFX nForce 650i Ultra
Patriot PC2-6400 8GB (4x2GB)
36GB WD Raptor
Samsung SyncMaster 931c
Samsung SyncMaster 750s
Windows 7 Home Premium 64