Cambelt Change

I figure its about time to change the cambelt on my MK2 Golf GL. (basically I'm not sure when it was last changed and don't want to risk it going any time soon) I've got the Haynes manual for my car, but to be honest it is confusing me a bit as it mentions removing the belt at the same time as the camshaft sprockets, which I'm guessing I don't need to do if just changing the belt?
Can anyone provide me with a decent, clear explanation of how to change the cambelt?
Do I need any special tools to do it or can I get away with the usual car maintainance toolset (socket set, spanners, etc)?

Cheers

wg100