Geobrowser or other Location Friend Finder

I am setting up a User Profile as described in http://shellmultimedia.com/tutorials/user-profiles-version-2

Essentially I want to include address location (Address 1, Address 2, City, State, Zip)

I would then like to hook it up with a find friends locally. Only City, State and Zip will be required fields. (or maybe just Zip).

It would then be nice to hook it up with Geobrowser or one of the other mapping programs (Show all users on the website on a Map).

That way it would allow people who are near each other to connect to each other.

Any ideas on how to do it?

Thanks
GreenJelly