Screen sizing

[Anonymous]

     I have installed redhat 5.0. when I am working in x windows one part
of my x-window (for example the right portion)  is out of the screen and is
coming on the left hand  side.The pointer is not pointing to the right
position for example If I bring the pointer to any position and click it
does'nt proceed further for that I have to bring the pointer slightly to
the right of the particular position
        Please reply to this problem
         thanks