The MS COM/OLE viewer isn't all that great. It's not really a "Class Browser", rather it lets you see the COM and OLE objects. It's nice for knowing what's there, but not for finding methods and properties.
The downfall with the AS browser is that it's web based and a little slow. There's another class browser with VB and a good one with sharpdevelop. Unfortunately those two can only be run from inside the apps.
I tried to access the browser several times and all I get is a blank page containing a couple empty frames.
I checked the minimum requirements and I believe I have them all : my OS is NT4 SP6 and I have IE6.0
If anyone's heard of a similar glitch before, let me know