good start, needs some more work though
the menu isn't very readable, like the words Font and Border. and you need to embed your fonts into the flash (Uppercase, Lowercase, Numerals, and Punctuation). it converts them to glyphs and saves them, so the person using your flash doesn't need to have the same exact fonts as you, cuz if they don't, they just show up as times new roman. also could use some higher quality raster images, a lot of them get pixelated when they're blown up to larger sizes. may want to change their properties to set them up for smoothing also, if you haven't already.
pm me if you need any further explanation or directions on what I'm talking about.
quasimondo com_archives_000572 php
(replace spaces with periods, replace underscores with slashes)
that page will show you how to let people save out the image they create. the print screen thing works fine, but this is just one more touch that could make it better.
other than those suggestions, it looks good. could use some more images to pick from, but not too many, I'd say 50 tops, and maybe like 25-30 backgrounds. changing the color of your text would help also, and since it's aimed at the design impaired, or at least program impaired, maybe picking out 3-5 colors for the text that would work well with the current choice of background. just some ideas for you to mull over