i have a 19 inch dell screen but i cannot get the seize right?

Answer 1

Don't know exactly what you're asking. If you mean that it doesn't measure out to 19 inches you have to ask yourself if the 19'' is only the screen or if it includes the outer edge too. Also, remember monitors and tv screens are measured on the diagonal. That's why they don't give you something like 10"x10".

Answer 2

If you are referring to the resolution of the screen (i.e. 1024x768)?

Find out what your monitor model supports. Then you can just right click any where on the desktop and click properties in the drop down menu. Then click the Settings Tab, this should give you able settings to try.