so my friends and I can play on it. sounds like you are not going to publish the game. For a single copy having it printed proffessionally is of course well possible, however, for me it would be too expensive.
Cheap suggestion: what about taking a plan of Risk, should be easy to get and cheap.
The expensive option would be: Find a designer who draws you map (and pay him) and find a company that prints it for you. If that´s the goal, we could maybe help you finding them.