If you buy retail version, fan will come in it (not to worry)
LGA775 is different, entirely different, n it, the processor has holes (rather than the pins), and Motherboard have pins (rather than holes), so you have to buy the Intel 915 or Intel 925 based chipset board for it, which has JUST entered the market, so you have definately 478pin processor.
Intel Core2Quad 2.66Ghz 12MB L2-Cache
4096MB DDR Kingston Hyper-X
XFX 9600GT AlphaDog
Seagate 2 X 320GB SATA2
LG L246WH Flatron 24"