oooH! Sorry you're not feeling well, Sydneybean!
Dial up is no fun when you have images to upload. And the "magnified" image in my Shops was uploaded to Photobucket and inserted at the top of the Cafe Press page with a link just like the one I posted above, using HTML in the Section Description box.
Glad to read that there is an easier way with the Screened "point with arrow and it magnifies" deal.. .
Sometimes, although we are proud of our work, if you have a nice BIG image uploaded for customers to appreciate, you also have to deal with nefarious people who will snag that image to use on "return address labels" and sell them on eBay, etc., etc., etc.
So, sometimes it is best to just go with what is available and trust that your potential customers find you.
Take care of yourself. . .get well, that is your prime directive! Good luck with the Shop.

Ann K.