<A href="http://www.cisco.com/univercd/cc/td/doc/product/aggr/vpn5000/client/winmac/macosx51/install.htm">Definately exists</A>, but I think these clients are only licensed to companies who buy their VPN server hardware. bah
I currently use the Cisco 5000 VPN client which supports Shared Key and works quite nicely. If you know someone who has access to Cisco's support software website have htem download it for you. It will be worth it. Clean install. Easy setup. Very smooth.
Even if you configure PPTP with all the right settings, you still have no way of passing the userID, password (from SecureID) and PIN. Basically, the PIN is what kills me as I need the Contivity client to concurrently pass all 3 pieces of data to the authentication server...
otherwise, good to know that there will be something by EOY.