Hi,

>>
After Click on the "Browse" button, select the "Microsoft.Web.UI.WebControls.dll" file and click the Open button, the "Microsoft Development Environment" show this message:

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Microsoft Development Environment
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There are no components in 'C:\Arquivos de programas\IE Web Controls\build\Runtime\Microsoft.Web.UI.WebControls.dll' that can be placed on the toolbox.
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OK   
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>>

Hmm. Not sure what to suggest (presumably it compiled OK?). Can you add an object from the DLL using code - i.e add a reference to the DLL in a project and try something like 'Dim o as new Microsoft.Web.UI.Webcontrols.TreeView' (for VB) ? Does the DLL look OK in the object browser ?

Regards,
Viv