I've downloaded 4.0 and unzipped the whole package so everything is in nice folders. I can't find a way to install everything even though the instructions said there was a handy .exe file to load everything. Help!
i don't think we provide an EXE file any more (not since 4.0 anyway). just unzip the ZIP file, and move all those folders into your interface\addons directory.
If you really want to get tricky, just make a shortcut to your AddOns folder and put it somewhere convenient like the desktop.
Not only does that make it easier to move folders into AddOns (if you don't unzip directly into it already), but it gives easy access to that folder in case you have to do some mod management.