the "proper" way to clean your computer

ok, so ive been cleaning my computer (just the fans and stuff) with a vaccum with a brush on the end.
but ive heard in another forum that this is a bad idea

so wahts teh proper way to clean the INSIDE of my cmoputer??

oh and where can i find the stuff i need? oh in Australia

thanks

I use compressed air to clean my computer. oscar530

Same here, I use my air compressor, cause that canned air is too pricey for me and how much I use it.

usually $10 US per can

air compresser $70-$150 US approx?

I install Hardwood flooring, so I have to have an air compressor. But I blow out my computer so often, it might would still be worth it for me to buy a compressor, LOL.