I have my printer connected to a PC with Windows 7. I have 3 PC's that can print to it over my wireless network. But for some reason I can't get the MBP to print. I have tried many methods and they have all failed.
Install it and share that printer. Then on your mac go to system prefs/Print & Fax.
Click the plus sign on the bottom left hand corner to add a new printer. I believe it will look for one on your network automatically and it should show up. Sorry if I'm mistaken, but I believe this is how I did it in the past.