any access-list gurus out here?

Hey all, I need a little help setting up an access list on my cisco router. (I’m a rookie at this)

Basically I want to allow all traffic on my network out into the internet but deny any attempts from the outside world to contact my router.I thought something like:
access-list 102 permit tcp 0.0.0.0 255.255.255.255 eq www
access-list 102 deny any

applied to the “in” part of my connection to the internet would allow www traffic through but it’s not 🙁 ie when I tryto surf with that access-grou in place I go nowhere.

Thanks a bunch in advance! 🙂