I'd have to add that the ALA styleswitcher is a *very* worthwhile investment of time. Just be sure to clearly mark its location on the page for the users, so that if they're struggling with one design they can switch to a friendlier one.

RE the great font size debate, All of the techniques have their uses--being able to maintain an *exact* size across all browsers via screen resolution (px), or across all resolutions via browser (em), or relative to the rest of the document (big, etc.) all have their place. For example, in any case where the pixel size relative to nearby images is critical, and the image is not a vector graphic, you'll probabably want to use px. A lot of sites are designed around such images, because the same "look" cannot be achieved the same way liquidly without truly advanced knowledge of CSS design, which is time-consuming to acquire and expensive (or should be ^_^) to hire. Not to mention almost impossible to incorporate in a style-switching schema, for reasons too in-depth to go into here. Oh--and px *is* accessable to anyone who cares to try. One of these days I'm going to put up a good "use this stylesheet" to download for sight challenged people, along with IE instructions.... Anyway, the control to cancel font styling is right there in options->accessability, and I hear IE7 will give text size control (along with the newfangled "tabs"--way to catch up with the curve, Mr. Ballmer....)

--Geek With a Guitar