Vagif, Its not just useful for GUI development - I think you will benefit from dual monitors doing any kind development. I've been using duals for 5 years now, all our developers have them. I would hate to be restricted to one! :) I typically use the 'left' monitor for the main work focus - typing in dodgy code and the right screen for auxilary information like having MSDN help open or another source file. This way you can view help documents alongside your code window, this is so much more efficient than either trying to work at crazy high resolution or having to constantly flip between windows. I've 2 21", each working at 1280x1024, which windows sees as 2560x1023. I'd recommend Matrox dualhead G450 or 550s - rock steady, excellent 2D displays. Maximise across screens is a setting on the Matrox drivers along with a load of other goodies like centering windows in a certain display, preventing windows spanning both screens, remembering windows positions etc. Check out http://www.realtimesoft.com/multimon/ for more info. Stu