I'm still at work so I can't install these yet. The missing TAB is a generally a sign that these are WHQL drivers (tweaking is bad according to Microsoft [eyes roll]). I wish they'd mention this before you actually install them.
Anyway, when I get home I'll try that old trick of using an older nvcpl.dll file to get the control panel back. Those who don't want to wait and don't know what I'm talking about. Extract the driver files from the .exe with Winzip into a temp directory, copy/paste the nvcpl.dll file from it's closest equivalent into the temp directory (in this case, probably v27.70), and then run the setup.exe to perform the install.
Usually, this takes care of the problem. Manually copy/pasting the file into they c:\windows\system file (overwriting the existing one) without doing another reinstall does not work all the time in my experience, but you can try that if it's easier for you.