I notice that my fan is constantly running... perhaps a little louder than usual. ive done some research... some say to open up the computer and clean the fans... idk if that is advisable for me considering i have never opened laptops before...

do apple do sort of things where you take your laptop and they clean the inside for you of any dust/residue?

any suggestions other than lift the laptop, get a cooling fan... etc. sorts of advice? i mean i look at the fan behind the monitor (12 inch powerbook g4 1.5ghz) and it is DUSTY!!! any advice on cleaning it? or any advice in general?

Thanks !!! please provide input... as i am curious