Lets say I have a table layout, right? It is in the center because my resolution is 1024 x 768 and the table width is 760(for the people with 800x600). Let's say I put a div tag that makes a picture appear at 250 pixels to the left and 100 pixels from the top. Would it look different in 800x600?

It probably will, so try just using <center> instead and leaving it 100 pixels from the top. That way, it will be in the center no matter what resolution views it. Either that or make a page that is for smaller resolutions, and one for larger resolutions.

I hope this is helpful.

You could always try it out yourself. Assuming you use windows, just right click on the desktop, click 'properties', then click the 'settings' tab, and there's a slider bar that says 'screen area' and you can adjust your screen resolution there in order to preview your web page in multiple resolutions.

Hehe, I forgot I could change my res.