Which versions of the OS can be configured to connect to a VPN?

I want to setup corporate sync on my DroidX and it appears to work until I try to get email. My office uses Microsoft Exchange. I think I need to set up VPN to do this? (not sure, I know I have to use vpn to make outlook work if I'm not on the network) Which VPN selection should I use? We are using a really old Cisco VPN concentrator that I don't know much about, with a Microsoft shop …

I often check my mail at my office using the VPN connection which bridged my PC with the Microsoft Exchange Server and so that I can check mail using Outlook. I want to do the same thing when I'm out of my office and on my Nexus One mobile phone. I have succeeded in setting up the VPN connection (see details here). But I cannot succeed in setting up my email on the phone. Steps I have made: Open my …

I often check my mail at my office using the VPN connection which bridged my PC with the Microsoft Exchange Server and so that I can check mail using Outlook. I want to do the same thing when I'm out of my office and on my Nexus One mobile phone. But I don't know how to set up a VPN connection like the way I do it on my PC. Below is the screenshot of how I set up my …