How to search users' threads by prefix?

[hiker]

I'm looking for the search string that can search a certain user's threads he's started that begin with a certain prefix.

I've got bits and pieces, but here's what I'm looking for.

This search string gives me all of that user's posts, but I want threads started with the prefix of "Trip Report".

http://www.bogley.com/forum/search.p...vBForum_Thread

here's the same string, non linked:

http://www.bogley.com/forum/search.php?do=finduser&userid=333&starteronly=1&contenttype=vBForum_Thread

So, &userid=333 can somehow be substituted with $userid and I assume the &contenttype=vBForum_Thread needs to be somehow edited or swapped out with &prefixid=Trip_Report but I'm just not getting the right results.

Any help?

Thanks.