RadListView for ASP.NET AJAX is available since the Q3 2009 release of the Telerik AJAX suite (2009.3.xxxx), hence you will need to migrate to this version of the bundle in order to use it. Upgrade instructions can be found here
Additionally, I suggest you contact the purchaser of the AJAX controls in order to add you as a licensed developer. Thus you will be able to take advantage of the support options
that come with the respective license.
the Telerik team
Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items