I have Knoppix 3.6 on one of my machines. I have no problem using it with Samsung SyncMaster 191T LCD monitor however, when I connect the machine to ViewSonic2+ or Packard Bell or Comppaq, and some other monitors, every thing is blurry with lots of lines on it after the initiation of hardware dedection and so on is finished. Paradoxically, I have no video problem when I use my neighbor's 14" IBM monitor. What is going on?
Any help or suggestion is appreciated.

PS: I have tried the same thing with Red Hat. Unfotunately, with the same result.