Installing CUDA Toolkit 3.0

I tried installing the CUDA 3.0 drivers for my Windows 7, 64-bit notebook, but I got a number of errors. First, the installer is complaining that I am running a 32-bit uninstaller on a 64-bit system. Although it displays the message that installation will terminate, it actually goes on to the actual installation but then it complains that my OS is neither a Windows Vista 64 bit nor a Windows 7 64 bit (which it is) and then the installation terminates.

Has anyone encountered this problem? Is there any workaround? If so, how can I proceed with the installation?