I know this isn't a computer help forum, but there are lots of intelligent people...
I recently installed Windows 7 on my old computer (it was running Win2K). So I put Windows 7 on a different disk, so technically it has two systems, but that's no problem.
The problem is with the sound. When I installed Win7, sound refused to come out. I think it's because of a compatibility problem (the motherboard is an Asus P5VD2-MX, and doesn't have a driver for Windows 7. So that's one problem. I've found forums where people have complained of the same thing, so it's not just me.
So to try to get sound, I installed a sound card, but whenever I try to install the driver the system gets really, really, really slow, like I can see the animation of windows getting maximized and minimized. Any ideas on what I might try? I'm sort of resigned to not having any sound or getting a new MoBo, but neither of those are really attractive options.
The one thing I haven't done is disable the onboard sound before installing the driver for the PCI sound card. Could that help?