There are several issues that show up in your dxdiag as well.
Firstly, you are quite short of hard drive space on all the drives and/or partitions
Second, you are showing two sound devices in operation both at Full hardware acceleration. You need to disable the one you are not using to render sound in the game.
Third, I would remove and reinstall the drivers for your motherboard, as you have made a couple of mistakes in applying them. The last good drivers for this board are the nVidia 5.10s. When installing, please be sure to avoid installing the nVidia IDE software. IIRC you will be offered this option during the installation, so don't use them and allow the generic Windows IDE drivers to be used instead. This will be be a much better alternative, and is the standard solution to a well-known historical issue.
Finally. If you could find an "AMD Athlon XP " CPU somewhere you would get a better result overall compared to a Sempron CPU. This is your choice of course, and Socket A Athlons are a bit hard to find anywhere except Ebay. I found the Socket A page quite easily....
http://computers.shop.ebay.co.uk/i.h...hlon&_osacat=0
and some 3000+ Bartons are available quite cheap. You might need to update your BIOS to accommodate the processor, but your particular motherboard will easily handle it,
Anyway, like I said, this last is optional - the first three items really need to be sorted out.
B