Extender controls arent actually doing anything??

Everything builds correctly but I'm haven't seen any of the extender features in action.

I have a text box and a watermark extender. Nothing happens when I view the page... Also when I tried to run the examples the extender features didn't work there either... Its seems like I'm missing something somwhere... (maybe I need to copy some script files to an asp.net folder or place the ajaxcontroltoolkit.dll somewhere)

Here's what I did for installation:
Downloaded the examples from herehttp://www.codeplex.com/Release/ProjectReleases.aspx?ProjectName=AtlasControlToolkit to my desktop
Grabbed the ajaxcontroltoolkit.dll and dragged it to my toolbox of visual studio

Lastly... my other ajax stuff is working fine (using script manager and updatepanel)
Maybe there's an installation package for the ajaxcontroltoolkit that I missed.

Here's my sample page:

<formid="form1"runat="server"><div>

<asp:ScriptManagerID="ScriptManager1"runat="server"></asp:ScriptManager>
<ajaxToolkit:TextBoxWatermarkExtenderID="TextBoxWatermarkExtender1"runat="server"TargetControlID="TextBox1"WatermarkText="test"></ajaxToolkit:TextBoxWatermarkExtender>
<asp:TextBoxID="TextBox1"runat="server"></asp:TextBox></form>

Thanks,
Paul

well... uninstalling and reinstalling everthing ajax related fixed it