I live in NYC. Like most people here, I get around by subway.

Is there a good way to store the subway map on my blackberry? I can do some stuff with google maps, but it requires an active connection to the internet which I obviously don't have while in the subway.

Any thoughts?

How about sending yourself JPG images of the Subway system.
Then, you can open and zoom the pictures without your data connection to see where you are.

If you can find the entire map on a website, just access that site via Opera mini. Hit the menu button > Save Page. Then you can access the page instantly without a data connection from Opera mini's start page > Saved Pages.

MTA NYC Transit - Subway Service Information

Here's the NYC Subway map. You can use MS Paint to put the 2 maps together and store it as a Picture on your BlackBerry.

Another solution, which I had been using:

Tube 2

mta has a mobile site that works fairly well. just go to mta.info from your device.