To create a CLR trigger, you must have already created an assembly, and you must have an OOM open in the workspace, in order to specify an associated class method.
        
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                Create a standard trigger.
            
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                On the Definition Tab of its property sheet, select CLR Trigger from the template list. A Class method field will be displayed to the right of the template list.
            
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                Click the Select Method tool to the right of the Class method field, in order to specify the associated method.
            
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                Click the Microsoft tab and select an assembly from the list to bind to the trigger.
            
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                Click OK to close the property sheet.