SLG150 - I wouldn't say your post was really bad, however the title doesn't help.

Looking through a list of nodes "Locking files over NFS" or similar is going to help other monks more than "There HAS to be a way to do this".

As far as your question goes, doing a Supersearch turns up File locking on NFS.
Turnstep has written File Locking, which has some notes relating NFS - the entire node should make interesting reading.

I hope that helps.

BazB.