Airport Extreme and VLANs

I think I know the answer to this question, but thought I'd pose it anyhow.

We have 13 Extremes throughout our school. Coverage is great and Airports are rock-steady.

However, with the purchase of two carts of iPod Touch devices, we're running out of IP addresses for the subnet we've used for the last 10 years.

I can create additional subnets easily, but any other than the original subnet can NOT get out to the internet. It appears that I need to create VLANs inside the network to be able to get out through the router we have. I'm going to get a new router but one thing the Cisco rep asked me was if the Extremes could be configured to create VLANS (like a switch can). I'm guessing NO?

One of the things I'd like to do is provide a "free" wireless network for parents and visitors to the school. I suspect I'll have to buy additional WAPs in order to do that, OR, can the Extremes be configured to provide an additional network like the new Valet (Cisco) router does. I'm also guessing NO?

Thanks,
John Orban
System Administrator
The Country School