Tom, you said Soldner Demo is crashing to desktop. Would you do me a favour and email me the crahslogs (inside the installation folder, one txt file and one dmp file) and email me your configuration. Easiest is to send me your dxdiag file: simply use the run... command in the start menu and type in dxdiag. When that opens up use the tools File->Save all info menu to save a txt file, send that as well.
Thanx, this might help us tracking down your problem.