If you are studying at DAIMI and running Vista you probably want to connect to the DAIMI network during your daily work. To do this, you need the Cisco VPN client for Vista. You can download the client here: https://www.daimi.au.dk/~staff/VPN/clients-ssl/vpnclient-win-msi-4.8.01.0590-k9.exe

To setup the client, you need the following parameters:
https://www.daimi.au.dk/~staff/VPN/clients-ssl/params.html

In a few days, the DAIMI staff should have a nice guide you can follow, if you can't make it work yourself. The guide will be available here:
http://www.daimi.au.dk/local/system/accessing-the-network/getting-vpn