Here are the best places to get cheat codes, besides the cheat devices' official websites.

Action Replay (V3)
Codebreaker
Gameshark
BSfree is probably one of the largest browsable databases out there. It's a tad bit buggy, though.

If you know of any other good ones, list 'em here.

Codebreaker :

One

Two

i cant figure out HOW to put the codes in. I mean do all the codes for one thing go in 1 box or do each line of code go in different boxes?

all the codes for 1 cheat go in 1 box.

so i just highlight all the codes for one thing and paste them in 1 box?

Why don't you just try it and see? because yes that should work (providing you're not doing something else wrong like using the wrong region codes or something like that)