IIRC, the "Bubbles" screensaver had adjustments in the Windows 7 Betas (It doesn't have any in the final Windows 7 version).
I've still got 7048, 7077 and 7100 on disc, but I don't know how the extract files from them without installing them.
I think that there were different drivers
in those versions too.
When I was trying out the Betas, I was able to directly install an old sound card, but it wouldn't install in the final Windows 7 version.