Wow, Vyatta. I had a play with that a couple of years ago. Very impressive. Cisco-like command line interface.
If I recall correctly, the beta I used didn't yet have the web interface ready. If I were you, I would look to get the web interface up and running, assuming it's available in 6.1. What previews I saw of the web interface, it looked much more intuitive (if you're familiar with application firewall admin) than the command line.
Just curious: why have you been put in the position of having to use a tool you've not been trained to use?