Rule of the thumb is,
once u've pulled the heatsink off the cpu die, do not use the thermal material (grease/pad) again, apply new.
so now it depends on you, if its intel based product, it'll live anyhow, if AMD (before 64 Bit) then it'll die for sure (if not, then wont start from beginning.
Intel Core2Quad 2.66Ghz 12MB L2-Cache
4096MB DDR Kingston Hyper-X
XFX 9600GT AlphaDog
Seagate 2 X 320GB SATA2
LG L246WH Flatron 24"