VPN with Sonicwall Pro Problems

I have setup vapor on a Mac G5 1G RAM on a DSL connection with a local IP of 192.168.0.5/24 to the sonicwall with an internal IP address network of 192.168.2.0/24. When I check the log on the Sonicwall it shows that the Phase I is going but then it fails with a Remote Client Does Not Support NAT Traversal. Ideas on how to correct? Thanks. Tim