Sorry you're still having problems. I think it must me a Windows 7 problem, in that case.
I use FireFox 3.5.5 on Vista, and IE8 on Vista.
In IE8, I can just select (when the cursor hovers and changes to the 'select' cursor) and Ctrl+C Ctrl+V.
In Firefox, it is not so apparent (you don't get a 'select' cursor) - I have to click the mouse in a free space before or after the table, and drag it over and past the table to another free space in order to select it.
Hopefully someone with Windows 7 might have some advice on this.