You can also get a 24" widescreen display with 1920x1200 native resolution for far less than $1000. The picture will be 11¾" tall, which is probably about the height of your current 21" CRT's picture, and it will be just under 21" wide. So it'll still be an upgrade in both 2D picture size and in resolution, but it won't break the bank.
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Bitt Faulk