I followed your instructions and managed to get everything with shopping cart working. However I've got a configuration problem for my guild. I want to use uniadmin to make sure all the urls are set correctly for the guildies.
The problem is that it appears that you can't put an '=' in the URL you sent. I get: http://deepthot.org/browncoats2/modules ... addon_name
every time I try to update. If I put the =shopping in it works like a champ finally. (had much grief configuring it.)