Later tonight I hope to put a 1GB RAM stick into my 1.25ghz iMac G4. After looking at some guides online I am pretty sure I can handle it. But one video on youtube said you need to be sure to reapply some thermal paste on the heatsinks before you put it back together. Do you? No where else had mentioned that but it seems like I probably should. How much? I know for a CPU it's a really small dab that needs to be spread very thin. I'm assuming the same with this if I need it? Also, I don't have an compressed air to get the dust out. Best way to do that? Can't wait to upgrade it to Tiger or Leopard.