Two wireless network adaptors - force one to connect to specific network

I work on a client site that has both wireless internet and stand-alone wireless printer. My laptop has a single wireless network adaptor built-in.

Swapping between internet and printer every time I wanted to print something was a pain, so I bought a cheap USB adaptor which works fine.

BUT... is there a way to force this second network connection to always connect to the printer? Currently it either sits there unconnected, or connects to the internet connection (to which my built-in adapator is already connected!)

Using Windows 7 SP1.