Ok guys, the latest version is about 16Mbyte file size. Anything around 6Mbyte is the older V3.0.0 or earlier. The ST website only allows v3.0.0 downloads at this time. I am not sure why.
Here is the correct download viewtopic.php?f=12&t=1429 if you need the newer version. As stated earlier, the new version installs the driver automatically and it supports Win7 and 64 bit machines.