Hi randywheeler,
I don't find any approach to change pop-up window for HelpProvider control in Visual Studio .NET. Maybe you can try creating acustom HelpProvider control. I move it from VB Express forum to Windows Forms Design forum, hope you can getbetter responses.
HelpProvider Class
Provides pop-up or online Help for controls.
Me.HelpProvider1 = New HelpProvider()
Me.HelpProvider1.SetHelpString(Me.TextBox1, "Enter the street address in this TextBox.").
Me.HelpProvider1.HelpNamespace = "mspaint.chm"
If the HelpNamespace property has not been set, you must use the SetHelpString method to provide the Help text. If you have set both HelpNamespace and the Help string, Help based on the HelpNamespace will take precedence.
Regards,
Martin