SPAM from Canada

Anybody got a clue as to how the SPAM laws are enforced in Canada?
I’ve gotten a couple of SPAMS and the imbedded url points to a domain in Canada by some clown in Ontario (porno)called www.approved1.biz.

I would like to see if I can make his life a bit more interesting.

Also ,is their a tool or service that would let me find out who hosts these morons websites ,so that I could put heat on the ISP.