any ideas on what vnc viewer will work?

ok, I figured this one out, it was the monitor, I switched to a good quality dell monitor and the display is fine.

ok, so I have my Pi connected to a video monitor that has a HDMI in, the monitor supports up to 1080p, however puppy is displaying at 656x414, I have tried all of the video wizards but noting, one time it did boot up full screen, but I do not know how I got it there, and after a re-boot it went away...

I don't think the cards are bad, mine is doing the same thing on two different cards, on two different computers. It was working perfectly yesterday, I wonder if there was some update or something that has screwed it up?