I fixed the problem with not being able to connect with the COM port by trying a couple different laptops. The serial to CAnN cable came with the kit of parts and the USB to serial cable was ordered off amazon. This is the product:
http://plugable.com/products/pl2303-db9. Yes we're using a CAN terminator we made it using instructions made by Team 1718 online. We're using a single black jag right now. I haven't tried connecting to multiple jags yet and I figured I would try the black jags before working on the old tan ones. This is what the BDC-COMM screen looks like right now. Thanks!