Ok, I am going to send you a file that will explain it all... As a matter of fact, according to Ethan Watrall, you can't center a layer... All you can do with it is make it the full size 800x600 and then use Visibility to play around with what is visible on the browser... You have 4 different fields to fill in. L<- This will hide everything on your layer starting from the left pixel and working to the number you specified. T<- same thing but works from Top to bottom. R<- This will Show you how ever many pixels you specify from the left and hide everything else after that. , B<- same thing again but works from top to bottom. Like I said, I will show you the File that I got all this from.. Talk to you then.