This Cisco Wireless Control System (WCS) licensing and ordering guide presents ordering guidelines for new Cisco WCS SKUs and licensing information for existing Cisco WCS deployments that are being upgraded to support Cisco Unified Wireless Network Software Release 4.1. This guide includes information on buying new or expansion Cisco WCS licenses, migrating from CiscoWorks Wireless LAN Solution Engine (WLSE) to Cisco WCS, upgrading to the Cisco WCS Location option, and deploying the free Cisco WCS Demonstration License.
A free 30 day, full featured evaluation copy of WCS for 10 AP support can be downloaded on Cisco.com. Please note that you will be prompted to enter your contact information and the hostname of the WCS server you would like to install the license on so plan on having that information in front of you prior to the download. The download will then generate a license file that you will be emailed. Following are the instructions to download 30 day WCS evaluation software :
Rob gave you an excellent and very detailed answer as per his usual. A "5" from here in NYC.
As for your followup question, no you don't need the WCS Navigator.
According to CCO, "It supports partitioning of the unified wireless network at the management level. It supports up to 20 Cisco WCS management platforms with manageability of up to 30,000 Cisco Aironet lightweight access points from a single management console. It runs on a server platform with an embedded database."
If you are just running a demo of WCS the Navigator would be overkill. Take it one step at a time and let the forum know if you ever do try out the WCS Navigator. We are always interested in stories regarding new Cisco products like this one.