Shyboy,
The first thing you want to do is probably drop that utilization to somewere below 30%. That should give you a few points on your Score.
Second, make sure you don't have too many inquiries within the last 6 months. I spoke with a CSR at Amex who told me once that 6 or more can be considered too many. If that is your case, I would wait a little.
Third, the card that will more linkely let you in is the Amex Delta card.
there are plenty of threads here talking about that, search for "Amex Delta" and read what others are saying.
Good Luck,
Tavares
FAKO - EX: 749 | EQ: 769 | TU: 749