I've set up a shipping profile for this -- and try to create a button for an item using this profile, but it only allows me to enter pounds (LBS). I just want paypal to calculate the order total and add the shipping amount I specified. But I can't find a way to do this. Seems simple enough to me...
PayPal's Website Payments Standard Integration Guide explains how to setup your shipping, have you checked out this documentation? The guide can be found here.
