Cooling fan and CPU cleaning

Hi.
my cpu was heating too much so i checked the fan but there was nothing wrong with the fan. then i thought that may be cooling paste has expired as i had read on some tech site that after some time cooling paste does not perform well. so i decided to apply new paste. i ordered paste and it has arrived but i am worried about cleaning the cpu with the liquid which came with the paste. my main worry is about with which cloth should i clean?

i am in Sydney, Australia and i am new to this country. where i can buy these products?

thanks

 

A bottle of 'Acetone' can be got at any pharmacist if you are wary of the fluid they gave you. I use a cloth that is for cleaning my spectacles which suffices and leaves no fluff.It looks like silk and quite thin which you can get at any spectacle shop. If using the Acetone put on a pair of protective gloves as this stuff can burn. I use the thin plastic gloves what the medical people use they are inexpensive and easy to obtain.