If using the archives, you need to rename any addons you get there to what they were originally named. Otherwise, they won't show up. The easiest way to find the original names would be to find their original topics and take a look at what the link is (this is in case link goes to RTB2 or sumtin) and changing the name to that.
However, some addons have lost their topics. Which leaves you with guess and check. Good luck.
