XServers for Pivoting Monitors?

uno asks: "Hi, I'm wondering if there is an X-Server I can use for my pivoting monitor. I have had WinPortrait on my old Windows but now I would like to work on linux pivoting the monitor too. The platform is SuSe5.3 with KDE, ADI Microscan 17x monitor and an ATI Mach64. Any Hints?" Pivoting monitors! Man, I remember using these. They were neat!