hy..now i ve you got a PowerMac G4 you have to put the sidePanels in alcool(about 95%)..
about one day in alcool and then rubber the paint off..

for the apple-logo--ehrrrmm..you ll have to take a VERY tiny card or something like that and then stick it between the apple logo and it should pop-off..

so far

My babys:

Mac mini G4/1GBRAM
Modded PowerMac G4 Quicksilver/1GBRAM/Dual 1Ghz/6800 GT FLASH Giga-Designs
RedPainted G3/512MB