connecting to 2 wireless networks at once in vista

I have printer connected via usb to a linksys wireless printer server which
is in turn connected to a linksys broadband wireless router. My DSL line is
also connected to the router.

Prior to getting DSL, the wireless print server worked just fine. Once I set
up DSL in vista, I now have two seperate wireless networks. One for DSL and
one for the Print Server. I can't seem to have both active at once in vista,
so i have to switch back and forth between the two networks if I want to
print or if I want an internet connection.

I'm guessing it is possible to set my little home network up so I don't have
to do so, but it's beyond my ability to do so. Anyone have any ideas or
places where I should begin to look?