I just got the phoenix gold eq232,
http://www.phoenixgold.com/eq232.html
It looks like it will only hook up to 2 speakers. I want to hook it up to all four ofcourse, so if you can figure it out, please let me know. Thanks.

Well the easiest way to do it is to get some "Y" adapters for the rca outputs and then you have 2 sets of outputs to go to a 4 channel amp. of course, with it like this, both sets of left and rights will be the same...and you will loose the fading ability to go between front and rear if thats how you plan to hook it up. I never use the fader anyway on my car, i just set the amp's gains properly so it has good balance from front to rear. I basically can just barely hear the rears, mostly for rear fill. The fronts are where you want the detail and accuracy of your music, since we generally listen to music in front of us, not behind us. Adjusting it this way gives a better soundstage, and better imaging and accuracy..if thats what you are after...