OK - I delayed long enough. Got around to replacing the sunshade today. The directions in the thread regarding replacing the subwoffer are spot on and get you 99% there. I'll add the following comments as respects the sunshade replacement:
1) As noted in the subwoffer thread, removing the seat back is a royal PITA. Get someone to help you
2)Removal of the latch anchor bar on the passanger side - not really necessary if you have the tools to get at the seat belt anchor bolt which lies under neath it. I did not remove it and it did not create any issues.
3) I removed the sholder harness retainers from the top of the seat back (3 screws on the two end ones, 2 screws in the center one. This allowed me to completely remove the seat back from the car
4) With a sunshade, the rear deck lid is split at the sunshade. Two clips hold the front section in place. Follow the directions in the sub woffer thread to remove it. To remove it, you really need to also remove the trim pieces from the two sides as they wrap the deck lid on the front. Not an issue. Be careful but they pop off fairly easily. I also pushed the sholder harness througn the deck lid so that I could completely remove it. There is a trim piece where the harness goes through the deck lid. This pops off easily. Just thread the harness through the opening.
5) I removed the center brake light. Slide it towards the passenger side and slip your finger under it. Pops right off. Unplug the light.
6) The rear portion of the deck lid comes off very easily. There are 4 plastic clips that fit into slots in the sunscreen body
7) 6 bolts hold the sunscreen in place - 4 on the back side, 2 on the front. It's kind of tight. Helps to have a spotter on the outside pointing out the location of the bolts. The 2 in each rear corner are a pain to get at due to the proximity of the glass.
8) Reassemble. Raise and lower the sunscreen after each piece of trim is installed to be certain that it doesn't hang up on anything.
Took me about 3 hours.
Thanks to everyone for their feedback and support.