ahmad,
Nice website. Splash pages are kinda lame though. They're just an annoyance to that get in the way of the content. I think they should only be used for content protected areas, where a login would be required.
I believe the w\idth: fix is a fix for ie 5. i know of an article that is the holy grail 3 column layout is this what your trying to create?
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edit:
glish.com : CSS layout techniques : 3 columns, the holy grail