2 Network Adapters And Become Default Network Adapter?

One usb ethernet adapter for internet connection through an old router, one for a Linksys Wireless G router hard wired to remote security cameras sums up the problem where one cancels the other out. This is a problem for XP, Vista, and even 7 beta while the primary system still runs XP. The dsl connection is through an old dsl setup using a usb adapter while the Linksys pci adapter card or usb adapter once installed becomes the default network adapter.

The wireless router itself is plugged with the RJ-45 ethernet adapter directly into the main controller/dvr box for live wireless feed to the main XP system or this one as a second means along with direct plug in to a tv set in the room where the main box is located. In XP, Vista, and even the later 7 beta the same problem of running two adapters without conflict is the main question needing a working solution. This thread is intended to tax the most network familar people here.

The landlord runs the main XP system with eventual plans to upgrade to Vista while this system serves as a testing machine a good deal of the time explaining multiple OSs as a rule. The router and adapters are in working order not seeing any defects while canceling the original dsl adapter out when installed. That takes out the online connection in the process.