Hmm both Drivers and your computer sound out of date. Run Blockland and start a game then exit then post the console.txt on the forums which should be in the folder with Blockland.exe.
OpenGL driver information: Vendor: SiS Renderer: Mirage Graphics3 Version: 1.5.0 Missing WGLEXT function 'wglGetSwapIntervalEXT'You are missing some WGLEXT Functions. That's possibly VERY bad.
Update drivers for Vista.Make sure to get hotfixes from microsoft.If all fails, then the graphics card cannot work at all with Vista. Replace Vista with windows XP.