mulderm,
There are several parameters that control the size of each screen. I am making some guesses here. I ASSUME that you are trying to get your FIRST graphic screen to display at the MAXIMIZED (Full Screen) size. Is this correct? If so, here is how I have done it before.
1. Create a "dummy" screen that is the first one loaded. This screen's only function is to give you a place to put a program line which refers to the NEXT screen.
2. On the dummy screen (call it "0_Start" for example), click on "Edit", "Display Settings", "Behavior". Then under the Commands menu, Startup, enter following commands: 1_Main/Max;ActivityBarOn;Abort Me. The "1_Main" is the name of the screen that you want to start Maximized.
3. Save the dummy screen, with the Startup command as shown above. The rest of the screen can be blank, or whatever you want. It will only flash by on your display.
So these commands tell RSView to load a screen called "1_Main", then maximize it to full size, then turn on the Activity Bar at the bottom of "1_Main", then Abort the current "0_Start" dummy screen. You may substitute your own screen names for these example names. Notice that you can add the " /MAX" command to the end of any DISPLAY command. For example, suppose you have a pushbutton on a screen that calls up another screen called "2_Main_Oxidizer". Then under "ANIMATION", "Touch" for that button, under "Press Action:" you could enter "ABORT ME";"DISPLAY 2_Main_Oxidixer /MAX", which says to close the current screen, then open the 2_Main_Oxidizer screen, and make it full size.