Hi, My name is Eric Moyers. I am a Network Support Engineer in the Cisco Small Business Support Center. Thank you for using the Cisco Community Post Forums.
I would first look in the Admin Guide for that device. There is a section on configuring VPN that is quite good.
If you still have issues after that. I would call into the SMall Business Support Center for assistance. That number is 1-866-606-1866
Thanks
Eric Moyers
Cisco Network Support Engineer
SBSC Wireless and Surveillance SME
CCNA, CCNA-Wireless
1-866-606-1866