For #1, most distributions, including SuSE, have packages you can use to install the driver.
#2: Please see the forum sticky posts about how to generate a bug report.
#3: I'm not sure what you're talking about. Are you referring to the driver selection menu at nvidia.com? If you're looking for older drivers, you could try the the archive of official releases
or the FTP server
for all releases, official and unofficial.