First, can I just check that you bought Pro from www.limewire.com and that your Pro is less than 6 months old. If you've got Pro from anywhere but the official site, your email address won't be in the database. Likewise, if it's been more than 6 months since you bought Pro, your email address won't be in the database

If you do have the official version & it's not out of date, there are links here that should help
http://www.gnutellaforums.com/showth...threadid=54008

The easiest way to stop this happening again is to make sure that you keep the link to your personal download page