Joe,
My name is Ismael. Iam with the Small Business Support Team. For QVPN you configure a username, password and then enable remote management on port 443. Make sure you have the QVPN client for your RVS4000 installed on the Windows client. Links below will either help configuring the client or troubleshooting the QVPN.
Article 2922:
http://sbkb.cisco.com
https://supportforums.cisco.com/document/58641/quickvpn-troubleshootingpdf