quick ques, is it configured like this?
It doesn't sound like it. It sounds like the broadband connection is directly connected to one workstation and being shared to the other pc via internet connection sharing and the linksys router is there just to have a 'lil lan setup.
primary MBP Core i5 2010 | HR | OCZ 120GB SSD
gaming Core i5-2500K @ 4.1GHz w/ CM Hyper212+ | MSI N560GTX-Ti TF II/OC | MSI P67A-GD55 | Silverstone FT02 | X360 250GB + Kinect
htpc IONITX-A-U | 2GB | M350 | XBMC Linux | SABnzbd, sickbeard, couchpotato | NAS Synology DS411J | 4TB
hometheater KURO PDP-5020 | Marantz SR6005 | Definitive BP7001s, CLR3000, BPVXPs