Intersting, and I only clicked this topic because I thought somebody needed my advice!
One tip though for all the newbies out there:
When sizing tables, try to use % instead of px. This way, if you have a 700px wide table, some body running a screen resolution of 800x600 shouldn't need to scroll horozontaly (Spelling?, this forum should have a spell checker!).
However if you had say, a table that took up 50% of the page (width) then it would display much better on lower screen resolutions than a 700px table
Sorry if this soesn't make much sense. I have a hard time wording things, and i'm English! :-P