If the touchscreen is still active, plug in the USB cable and select PC Suite (the button is located in approx. the lower third of the screen, aligned to the center).

Use the synchronize option of the Nokia PC Suite computer program to copy your contacts into one of the supported Outlook or Lotus programs.

If your contacts are stored on the sim you'll need to have entered the sim code to retrieve them, if they're stored on the phone then you should be able to do this without a sim at all (in case you get stuck at the sim lock).

Good luck mate, I hope you're able to recover your contacts!