Well, I have been using another way to make the size of screen fit: Make 
two versions of your page, one for 800x600 and one for 1024 x 768.

On the start page I had a JavaScript-check to see if the user had enabled 
JavaScript (most people have). If not, he/she was redirected to the 800 x 
600 version, otherwise another script block would determine whether the 
user was running 800 x 600 or 1024 x 768 and then redirect to the 
appropriate versions.

A page optimized for 1024 x 768 shouldn't look too bad, even if the user 
is running 1280 x 1024. I always use fixed width-tables to ensure that I 
won't get any whitespaces in the middle of my page.

That was my opinion, have a nice weekend.

Sincerely, Yoel Pedersen