This link should help :http://www.cisco.com/en/US/docs/ios/12_2/configfun/configuration/guide/fcf012_ps1835_TSD_Products_Configuration_Guide_Chapter.html
You can do one of two things. The Sonic wall does not know anything about the new subnet. You would have to configure a inside route on the sonic wall so it knows about the new subnet. I am not sure if the Sonicwall will allow the ip re direct out...
Why do you have the trunk set up just to allow VLAN 3? If you are going to do that set both ports to Acees and see if you get the request.The other thing is to create bvi 4 and assign an IP adress to it on the AP based on vlan 3 IP adresses.
The 3524 has a Gigabit connection and the allied telsys has a 100 base FX. The only way to connect woule be to use a transceiver to convert the copper port on the cisco switch to fiber for the connection. or you can use a crossover copper cable to ...