Agreed. Though large and widescreen monitors are in wider use these days, I would still make your site look as good as it can at smaller resolutions. Most hosts have some type of stats available for you, many show the resolution of your visitors, that's a good way to see what the majority of them are running when they visit your site.

Of course that's only my opinion, I'm still not clear on what you're trying to accomplish. A link to your site would be helpful.

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