CS Cart Modification

Hi There I have two projects for CS Cart version 1.3.5 SP3. I need to add a variable so I can use UPS real time shipping manager. I sell products that are aerosol and others that are not. Aerosol products by law can only be shipped via UPS ground. Non-aerosol can be shipped ground, 3 day etc... I would like the cart to offer all shipping options, unless an aerosol product exists in there cart, then only UPS ground (business or Residential) or will call will appear. Second, I cannot get the promotions area to work for my needs. I sell one brand of products that i would like to offer FREE shipping for purchases over 100.00 USD The idea is to have a and/or statement like: "zymol product(s) purchased" and "order amount over $100.00 USD" then "FREE shipping" I would like it to still allow the free shipping even if the customer purchases non-zymol products in addition to there $100.00 of zymol products. I cannot get this to work in there current system. my website is [login to view URL]