http://www.google.com/webhp?hl=en#hl=en ... fp=1&cad=b
It's pretty tough. completely different than shipping a regular package.
first you need to know how much the skid weighs, and approximate dimensions, then more importantly the shippers dock address. The shipper will probably tell you and your recipient what dock is near by.
Have you considered opening a phone book under 'shipping - Freight' and just .. oh I don't know.. actually calling vendors instead of relying on someone to do it for you? There has to be an R&L, Fed Ex Freight, Yellow Freight near by.
If you are detecting a note of sarcasm or hint of condescendtion... it's not your imagination.