Kodak makes a number of photo printers that produce waterproof prints. Alternatively, you could use Wal-Mart, Walgreens, Kinko's, or an online photo-printing service. Just copy the file down the available sheet size so it's not quite so expensive. 4x6's ought to make at least 3 approximately-business-card-sized documents.
Of course the JPG format most of the photo printers will expect isn't ideal for text and vector-based graphics, but you're not really constrained for file size, so you can crank the quality settings as high as they'll go. Alternatively, Kinko's should be able to use more-appropriate file formats, albeit probably at a higher cost (Though they could probably even use proper cardstock).
Sorry for the tangent...Welcome, Dave.