+10000 for Prefbid.com. Use the live help when they're online as they can log into your bids and see exactly what you did/wanted to do/need to do in the future.

Works very well and they know what they're doing. You may not like the answers of why you didn't get what you wanted, but it's very helpful for the next month.

Oh, and be *very* careful with using 'SET CREDIT RANGE to X' as if it can't award you a legal line with that in there, the entire group will fail. Do one group with the SET CREDIT range and then immediately after that group, do another group without the CREDIT RANGE. You might be surprised that you get the award.