Thanks for the welcome fellas!
And yeah, I have an AUX cord that's working in the current car that I'm renting and in my mothers, and every other car that has an AUX option already there. Sooo I'm sure it'll work.. I just wasn't too sure since I'm new to this whole car thing and I just assumed that since it's an old car, even if I added in a HU that had AUX, it wouldn't work unless I did something like tricking it by playing a blank CD (read that somewhere on here.. LOL) or something of that sort. Thanks for clearing that up though!