How do I get UPS and USPS quotes in Zen Cart to match USPS/UPS rates in my PayPal?

Hello!

I am having an issue i am sure is EASY to fix... but im drained so its not coming to me.....

On my website there is an estimate shipping button (which i love but dont need if its too much trouble)

Anyways... i get the table rate and UPS on there..
what i really want is estimated USPS and UPS to match my estimated USPS and UPS on paypal (which is how i accept payments)

on zen cart i am having trouble getting my UPS to work with me (i cant get it to change rates correctly so in the end it comes out cheaper than USPS!)

and i have not been able to set up my USPS correctly on zencart for some reason.


how do i make them all match and work corectly?

Zen Cart cannot work with PayPal IPN if you're having PayPal add shipping charges to your transactions.

I think if you use Express Checkout you can get around the limitation that PayPal Website Payments Pro (aka IPN) creates with respect to shipping.

Either way though, Zen Cart would be the driver for all aspect of the prices in any given transaction.

good to know.... so do you think my best option is to use zen carts estimator and rates instead of paypal?

also.. on zencart would you know how to get my USPS and UPS to show correct pricing?
im not able to for some reason