Viv,

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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