Hi freddie
Welcome to the Q&A Board.
I've heard there are some who transfer images to a memory card but I've personally never done it. Maybe someone will come along who has successfully and can share their experience.
Personally, I wouldn't mess with it. I've heard of too many horror stories from people who have used their memory cards in ways other than suggested in the manual such as formatting via a computer rather than in-camera.
You do have other options for getting your pictures to a local printer such as transferring them to a zip drive or burning them onto a CD or DVD. But you can also use an online photo finisher, like ofoto.com (owned by Kodak) or snapfish.com. You upload your images to albums you create at their site and order prints which will be mailed directly to your home.
Your question has piqued my curiosity though, so I'm going to look into it more and if I find anything, will post it here.
I am curious though. Why can't you get quality prints from your computer and printer? Are you using photo quality paper and, if so, are you setting the printer driver to it's highest quality?
Here's some info on printing digital images:
http://www.digicamhelp.com/inkjet-printers/digital_photo_printing.htm