Personally I always replace the thermal compound when the heatsink has been removed from the cpu. I would suggest that as a matter of course, as you are running the pc without doing so I guess it is OK, check your temps to see if there is any increase because of doing this. If there is, replace the thermal compound.
Originally Posted by v930
...... Im on the pc rite now.......
This has me rather confused, are you running the pc without the heatsink screwed down??? If you are you are in danger of overheating or killing your cpu.