A. Good news. Cisco now has a beta of a 64-bit VPN client which is supported on 64-bit Windows 7 and Windows Vista (but has no Windows XP 64-bit support). You need a Cisco.com account to access the beta, which you can find at this site.
* Deploying, Managing, and Maintaining Windows * Key Features of Active Directory from Windows 2000 to Windows Server 2012 * Key elements of System Center 2012 and System Center 2012 R2 * Deploying, Migrating to and Managing Hyper-V in Your Organization * Implementing a Private Cloud * Using PowerShell to Automate Common Tasks