Thanks, PatW. It kinda works in VESA mode, but the resolution is wrong, and I can't choose the right one. When I don't select VESA mode, the frequency gets divided between monitors and it's impossible to get around this problem. In addition, in VESA mode, two monitors double themselves--that's wrong: I should be able to enable or disable them from the keyboard (I still don't know exactly, how it's going to work). Why I'm doing this? Well, it's simple--our client wants to know if it'll work.