I have posted a similar solution here before..
Charts the problem here is that u have referenced the control but u
haven't installed the scripts correctly that RUN the tabstrip,treeview
etc..
Try this:-
To build the IE Web Controls:
1. Make sure you have installed the .NET Framework SDK v1.0 or v1.1
2. Run Build.bat, which will create a build folder in this directory.
The build folder contains Microsoft.Web.UI.WebControls.dll and a
Runtime directory of supporting files.
To run the IE Web Controls:
1. Copy the contents of the Runtime directory to the webctrl_client\1_0
directory under your top-level site directory. For example, if your
site root is c:\Inetpub\wwwroot, type this at the command prompt:
xcopy /s /i .\build\Runtime c:\Inetpub\wwwroot\webctrl_client\1_0 /y
This will create the following directory structure under the site:
/webctrl_client/1_0
MultiPage.htc
TabStrip.htc
toolbar.htc
treeview.htc
webservice.htc
webserviced.htc
[images]
[treeimages]
2. Create a new web application in IIS and copy the contents of the
samples directory to this application directory. For example:
xcopy /s /i .\samples c:\Inetpub\wwwroot\sampleapp /y
3. Create a /bin subdirectory for the application and copy the file
Microsoft.Web.UI.WebControls.dll to this directory.
The contents of the application will be as follows:
/sampleapp
multipage.aspx
state_city.xml
tabstrip.aspx
toolbar.aspx
treeview.aspx
treeview_bound.aspx
/bin
Microsoft.Web.UI.WebControls.dll
4. Request the sample pages from your Internet Explorer web browser, for
example:
http://localhost/sampleapp/multipage.aspx
For additional documentation and samples visit:
http://msdn.microsoft.com/library/default.asp?url=/workshop/webcontrols/
webcontrols_entry.asp
Hope this helps
Patrick