As I'm sure you know, the folding-community forum has been down for a number of days. We don't know yet if we'll be able to recover the data -- specifically your user-name/password/posts/etc. -- or not.
Assuming the data has not been recovered, you'll need to register again here (preferably with the same user-name and password and email). If you were already active in the beta team, see this thread: http://foldingforum.org/viewtopic.php?p=35#35
Depending on our ability to recover the backup database, data in this forum may be overwritten with data from the old forum or it may simply become the new forum. In any case, we'll try to support you with this temporary forum until we know more.