1.)u need drill, manual drill or a screw driver.. better drill dont go with my way(using screw driver)
to drill the rivet out.
2.)screw driver to un-screw the screw
3.)ask people who have same casing as urs..

for paint, look at 1st thread, then try search for paint tutorial or u could use tutorial that available in here

good luck.

u only drill rivet, also u need spare rivet for rivetting it backand using riveter which u can get at local hardware shop. dont drill till ur casing oso affect ler... just dril the rivet.

yes. the smallest is good enough.