I am currently using the UPSXML module to calculate my UPS shipping fees.

This works perfect.

the only problem is that my website sells actual firearms and the shipping needs to be calculated differently.

so here is what I am trying to do... any item in the cart that is from the firearms category will be charged a flat rate of $15 and will be shipped in 2-3 days via USPS. everything else in the cart will be shipped via UPS calculated and will be shipped the same day or next day.

any ideas on how to set this up? I am pretty good with figuring out code, but I need some help getting on the right path.

thanks!