A Few Questions
 

I'm building a user system and I've got some questions about how I'd go about managing some content and information. What I'm working with is...

Usernames, Ranks, and Games they play.

Currently, I have a user table, a ranks table, and a games table. The user table holds the user rank, but the rank table is there just so you can select one from a drop down list and edit ranks and stuff. Here's where I'm having problems.

How can I manage what games the user plays? I want to do it similar to the way vBulletin manages usergroups, but I don't know how they do it. In their user table, they save it as 1,2,3,4 right? Well, how do I insert that into a table if I use checkboxes to select games? How do I take what's in the table out and display them seperately?

If anyone has some suggestions and can give me examples... that'd be awesome.

I don't have the time to tell teach you but this will help
http://us3.php.net/explode

That was rather useful. Thanks.