Question : Cisco Wireless Access Point - Guest & Internal SSIDs

I am trying to spec out a Cisco Wireless Access Point, most likely an Aironet 1131G.  I want to ideally create 2 - SSIDs, one for the guest network and another for corporate users for obvious reasons.  I was told that in order to do this the equipment will support it but I have to configure specific vlans on a switch to do this.  Is this true?  What's actually involved in order for me to carry this out?

Answer : Cisco Wireless Access Point - Guest & Internal SSIDs

just follow the document
it will give you complete picture
http://www.cisco.com/en/US/products/hw/wireless/ps4570/products_configuration_example09186a00801d0815.shtml