Dynamic Modal Popup

I have a user control ascx file that has form data in it.  I need to create a Modal Popup for this.  I have dynamically created Link Buttons that have the same Handler "EditContact".  These events are firing, but I'm so lost as to how to get my Modal Popup to display.  I have searched around some, but I think I am missing some fundamental core and it is not clicking for me.

Here's my click event handler code behind.  I am currently trying to create this from code behind which may or may not be the best way.

Dim cArg As String = (CType(sender, LinkButton).CommandArgument).ToString
        Dim ajxModalEdit As New AjaxControlToolkit.ModalPopupExtender()
        ajxModalEdit.ID = "mpeEditContact1"
        ajxModalEdit.DropShadow = True
        ajxModalEdit.TargetControlID = CType(sender, LinkButton).ID

        ajxModalEdit.BackgroundCssClass = "modalBackground"
        ajxModalEdit.PopupControlID = pnlContactInformationAddEdit.ID

        Dim ucContactEdit As ucContactInformationAddEdit = CType(Page.LoadControl("~/uc/ucContactInformationAddEdit.ascx"), ucContactInformationAddEdit)
        ucCIEdit.ParentControlID = pnlContactInformationAddEdit.ClientID
        ucCIEdit.EditContactID = cArg
        pnlContactInformationAddEdit.Controls.Add(ucCIEdit)
        pnlContactInformationAddEdit.Controls.Add(ajxModalEdit)
        ajxModalEdit.Show()

My Questions:

1. How do I dynamically assign my modal popup extender to that button click event handler?
2. Can I / Should I dynamically create the modal popup extender (and its adjacent panels) in code-behind?
3. Is there a better way to do this?  Anyone have a link that creates the popups in code behind so I can link to the User Control?