If it is a
WORK pc, then it may not even have DirectX installed in the first place, as the sysadmin and/or management take a dim view to games on thier machines!
The original poster ommited to mention his DirectX version, but running dxdiag will put it right in front of you though, and if the thing gives an error trying to run dxdiag, then it's probably a fair bet that DirectX is not even installed!.
It MIGHT work in windowed GDI mode. Depends if there is DirectPlay installed on the box - if the splash screen with the Leo 2 came up before the errors, then sound should be a go, as it uses DirectPlay (for sound), as does the splash screen (for video, or in this case to display a single picture). Or DirectShow, been a while, but one of the multitude of DirectSomethings!
Cheers
Andy