I have a proposal for you: If you're not way too far into the game,play it again!I've fixed a whole bunch of mixed quests and missed items/persons/conversations just by restarting the game from point 0...
I know it's a big decision but I believe it's your only alternative...

Nick the Greek <img src="/ubbthreads/images/graemlins/silly.gif" alt="" />

"In the name of Malice,I shall fill the world with the stench of Death!"