Whitey08, when you get to Qatar Airways with all the paperwork they'll call an agent for you. You need to do the negotiation yourself, though. If you're not happy with the agent, you can ask them to call another one.

However, if you want you can always pre-arrange the agent. The one Qatar Airways called for me was this one:
WINGS CARGO SERVICES W.L.L
DOHA, QATAR, Off: 4371820, Fax: 4439729 Mob: 00974-6003165