Got a tip from someone on the development team concerning extensions. If an extension is generic enough it can be installed but there is a trick to get it to work;
I tried it on a couple of extensions, a code snippet browser and the Theme Manager. The code snippet editor was to rigidly coded to be of any use but the Theme Manager worked great.
1) Go to the MS Extension Gallery and search for the Theme Editor and download it.
2) Open it up with a Zip program, I used IZArc but any Zip program will work.
3) With a text editor open the extension.vsixmanifest file.
4) Replace the SupportProducts tag with the following;
5) Save the file, exit the Zip application.
6) Double click the VSIX file and voila!
It took a little research because the person that turned me on to this told me wrong but he did get me motivated since I knew it could be done.
My turn to return to the community.
I got two very nice extensions to work in AS5;
1) Productivity Power Tools
2) Ultra Find
Productivity Power Tools:
I got this to work the other day but didn't know how I got it to work and it would not allow me to modify options but today I found out how I got it to work and can now modify options. This is a must have extension.
This is for Windows 7 but should be similar on XP
1) Download the extension from here http://visualstudiogallery.msdn.microsoft.com/d0d33361-18e2-46c0-8ff2-4adea1e34fef/
2) Navigate to C:\Users\
3) Create a folder "Productivity Power Tools"
4) Unzip the contents of the .vsix file into the newly created folder.
5) Edit the extension.vsixmanifest file as described above.
6) Start AS5 and goto the Extension Manager and there should be a listing there for the Productivity Power Tools and if it is not enabled enable it and restart AS5.
Ultra Find is a little more complicated and if y'all are interested I will post a solution on my site in the forum later this afternoon.
Also if you have any other extensions you would like and can't install let me know and I will see what I can do.