Simple Audio Upgrade

[kerplunk]

Hey guys

I know this has been brought up in the past, put I'd like the most recent info possible.

I want to basically replace the audio system in my 2003 Boxster.

Ideally, I'd like some speakers in the back, and some sort of subwoofer.

The typical 6 speaker (2 small mids, 2 doors, 2 rear/surround, 1 amp, 1 sub).

What is the easiest way to do this? Is this something Best Buy can do? Are there any smaller subwoofers that fit the Boxster well? Can you guys recommend any audio receivers ("decks" or "stereos") that look nice in the Boxster?

I just want to be able to listen to music without it cutting out or popping...

Any advice would be wonderful.. thanks guys!