AbleCommerce Shopping Cart Software

I'm wondering if anyone has had any success returning live UPS Shipping Rates to their checkout cart. We have negotiated rates with UPS, but have been very unsuccessful in getting these live discounted rates returned to our cart. Let me know - I appreciate your assistance with this problem!

Have a look at this thread, it may be helpful
viewtopic.php?f=42&t=12985

Thanks for the reply, but I was asking about the UPS Negotiated Rates, not USPS - Anyone out there know how to do this?