Does anyone know how to setup a Commodore 64?

[The artist formally known]

I assume its the same what a 2600 has to be setup which they have at Radioshack. It doesn't have to say Atari on it,  I have the same thing as the link below, it connects old equipment to new TVs. Worked for me.

http://www.best-electronics-ca.com/TV_sw.htm

Or if you have s-video I suggest you get something like below

Atari 800 65XE 130XE GOLD S-Video video cable STEREO TV
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=260162130604