I’m *not* wearing my ITS Network Services hat for this… but, since there isn’t an official way to connect your 64 bit Windows (Vista, 7, 2008) machine to the UNI VPN (which is a Cisco IPSec-based connection) here is the best-thing going:
Shrewsoft has a free VPN client application – Shrewsoft download here
Once installed, import the UNI configuration file (MUST UNZIP)
Use your AD.uni.edu credentials as usual (just short username). Voila.