Question : VPN over wireless

I work at a school and many times people want to work from home.  So i install a Cisco VPN client, configure it and show them how to connect.  When i do the demo for the user, I can establish a VPN connection (even though i'm on the LAN) and it works just fine.  Our school also has a wireless access system (Also on the LAN albeit a different subnet).  I cannot establish a connection to the VPN server at all.  I always get 'remote peer not responding'.  Can anyone walk me through troubleshooting what the problem is?  or are the Wireless routers not configured to allow IPsec or something?  

Answer : VPN over wireless

It's more likely that your network config - the vpn and firewall - aren't configured to allow VPN connections to the outside interface from INSIDE your network.