From the vortex:
"There are 3 torx screws on the bottom of the door and there are two phillips under the door handle. Pry the plastic cover of the door handle gentlo to get to it. Once all 5 scres are out pull the panel up and there you go. You will still have some things attached to the door panel so be careful not to snap those off. ie wires for door light, handle cable and if driver side the gas and trunk release cables.
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More
"2 screws in the grab handle, after gently prying the cover off, three torx at the bottom of the door. Pull the bottom of the panel out. unplug fuel/trunk switches wire, courtesy light wire, window up/down wires, note where they all came from for ease of installation later!!!!!!!! I think there is a cable going to the door latch as well. Getting the panel OFF is a royal pain, as the rubber weatherstip inside the top of it likes it on top of the door, so it's very hard to get it loose, but it WILL come loose. Push upwards to get it to release"
The rest should pretty much be the same as this how to article.
http://www.myturbodiesel.com/1000q_how_to/a4/doorcard.htm
From 1000q, aka the site's how to FAQ.
Also, make sure the speaker will fit: more below, might have changed it, maybe not on yours
"The speakers are held in with pop rivets, you will have to drill them out to get the speaker off.
If replacing with aftermarket, check out the differences in the magnet size/mounting depth - it might be too large and hit the window if rolled down. If so it will require a spacer to be installed so your speaker sits out further and allows the window to clear.
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