I have FINALLY conquered these stupid things. Yesterday while we were out running errands I found some 5x7 cards at Staples. They are light pink with scalloped edges. This is really what I'd been looking for so I picked up 2 packs. And once I yelled at the printer Matt figured out how to print them correctly
I must say I'm pretty impressed. I think they turned out nicely and will be larger enough for the older folks to read.