I started using Sketchup on a a Presario (512 MB RAM, Intel Celeron D 340 Processor), I could build a fairly complex model (like a house), but the more I added, the more it slowed things down.
Colin, Do you think I’d have better luck if I ran Windows XP ? I think I
have tried it and it does the same thing. It keeps stopping on the “cannot
do open GL” error message.
In SU, at Window > Preferences > OpenGL, did you disable Use hardware acceleration? With that setting, the CPU will do all the work instead of sharing the workload with the GPU and its driver.