Need help configuring PowerConnect 3424 as a "vanilla" Ethernet Switch

I have  2 PowerConnect 3424 switches with GBICs (fiber) adapters installed on each.  We plan to use both the local and remote 3424's as the isolated switches off one port on our Dell SonicWALL E5500, so that they can support the SonicPoints (wireless access points). We're using the remote 3424 to support a SonicPoint which is located beyond the range of  the copper cable runs.

The SonicPoints have physical addresses on the subnet associated with the port to which they are connected on the SonicWALL. (the WLAN interface): 192.168.50.1     We had 3 SonicPoints plugged into a inexpensive 5-port 10/100 switch, which was then connected to the WLAN associated port of the E5500 and everything worked fine.

It's important to note that each of the SonicPoints is running in Virtual Access Point mode, so they each support 2 SSIDs/subnets by using VLANS so that the  WLAN port  also has VLAN 100 (192.168.100.x) and VLAN 200 (192.168.200.x) associated with it.

Obviously, with the simple 5 port "bare bones" switch attached to the SonicWALL WLAN port  and the SonicPoints attached to that switch, everything works great. Everything is routed properly and wireless users can connect to their assigned SSIDs and subnets.

One we introduced the Dell PowerConnect 3424 into the equation (instead of the "bare bones" 5-port switch) we ran into problems immediately.  We cleared the startup configuration from the 3424 and assigned a management address on the primary subnet (192.168.50.x), thinking that this would clear up any issues, but no.

Although we could access all the IP's for the attached SonicPoints, it's clear that the VLAN tagged traffic isn't making it back through the switch to the SonicWALL (no wireless users can get a DHCP IP address when attached to the Dell switch, but the SoncPoints work fine on the simple switch).

So, is there a way to configure this switch and all ports to just pass everything and ignore the VLAN tags (so that it functions just like the "bare bones" switch)?

Or, what would be the best way to configure it such that we can  properly route all the VLANS and the "base" subnet?

Thanks!