You WILL need OpenGL hardware acceleration and a reasonably spec'ed pc to run Trackballs. Trackballs has been tested on: CPU: Duron 700, XP1800+ cpus, Celeron 333Mhz, Celeron 1500 Mhz VGA: NVidia TNT and Geforce 2 video cards running NVidia's drivers (31.23 & 41.91), Matrix MGA 400 (32MB), ATI Radeon Mobility (16MB) OS: Red Hat Linux, Debian GNU/Linux 3.0 & "Sid", SuSE 8.1/8.2 and Mandrake Linux. Kernel: 2.4.19, 2.4.20 Platform: x86