your post here and the other above are a big part of why all of our backoffice machines run linux. the equipment is 4-5 years old for the most part. it runs fine, and doesn't need updating from a performance standpoint. the services (email, fileserving, printing, vpn) all work to our satisfaction, and we don't need additional features. why on earth should we put our business in a position that it is forced to spend thousands of dollars when the only benefit is to microsoft? dows, as to their liking.
an aside: i don't know why houston picked simdesk. i would think openoffice, or staroffice even, would be a much better substitute. well, i have an idea or two, but they certainly don't relate to technical merit or the ability to solve problems.