by Jim » Mon Oct 03, 2011 8:30 am
You would need to use the Custom Shipping API available in ShopSite Pro level stores. The help can be found at
http://www.shopsite.com/help/11.0/en-US/sc/pro/shipping.api.html
and
http://www.shopsite.com/help/11.0/en-US/sc/pro/shipping.api.spec.html
This probably would not be a simple task so you might need to contact a developer that works with ShopSite.
A list of certified ShopSite designers can be found at http://www.shopsite.com/csd.html most just do websites but a few do custom programming also. Mike Masim @Stuff I know has done custom scripts for merchants.