Thanks in advance for all the responses and suggestions thus far! We really appreciate the help.
We cannot access advanced properties within this graphics card such as hardware acceleration even with the 4 in 1 and VIA Unichrome (KM400) drivers in place. The best clue was probably dxdiag not being able to recognise much of anything on the integrated video.
Fortunately, Managed.com technical support has flown right past the cruddy onboard video and agreed to add a separate video card! I think this is our best approach after spending last evening applying and reapplying countless VIA driv