jorganizam writes [here], at August 18th, 2006, 03:33 AM:

“I solved my problem (took me 3 days ](*,) )

The problem was that that X took the largest supported resolution that both monitors can handle and that was 1024×768. So when I turned of laptop monitor (Fn + F4) and restarted X (ctrl + alt + backspace). The resolution 1280×1024 appeared in “Screen Resolution” applet.”