I downloaded Eclipse 3.5 (Galileo) the other night, and just went to install the server adapter for Glassfish. It's not built in, so I clicked 'Download additional server adapters' and tried to the Glassfish v2.1 and v3 adapters. No dice! I got a 'No repository found containing: osgi.bundle' error.

So I did some searching and found this post, which says to add the Glassfish plugin the normal way from http://ajax.dev.java.net/eclipse. For those unaware on how to do that, these are the steps:

1. In Eclipse 3.5, click Help menu, then Install new software...
2. Click the Add... button.
3. Paste http://ajax.dev.java.net/eclipse in the location text box, then click OK.
4. When the search is complete, the Glassfish JEE5/JEE6 adapter will show up first in the list. Click the checkbox, the click Next.
5. Click Next again, then Finish, and restart Eclipse when the adapter is installed.

You'll now have the Glassfish adapters available for v2.1 and v3 in Eclipse 3.5.