Just purchased telerik and in the process of converting winforms to teleriks components.  
I started off with the error of "Value of type 'Telerik.WinControls.RadItem' cannot be converted to 'System.Windows.Forms.ToolStripMenuItem'".  So I changed all ToolStripMenuItem to "RadMenuItem".  This solved the above error.

But created a new error "Private Sub AddMenuChildren(ByRef mi As Telerik.WinControls.UI.RadMenuItem)' and 'Private Sub AddMenuChildren(mi As Telerik.WinControls.UI.RadMenuItem)' cannot overload each other because they differ only by parameters declared 'ByRef' or 'ByVal'"


Any Help with the above error would be appreciated.
Below is my code:

Private Sub LockMain()
        'This subroutine handles the locking of the Main windows'
        '   menu options and child windows. It first iterates
        '   through all menu control collection items disabling
        '   them. It then iterates through all the machine 
        '   windows disabling them. It then enables a select few
        '   menu options.

        For i = 1 To mcc.Count
            CType(mcc.Item(i), ToolStripMenuItem).Enabled = False
        Next
        'If mwa IsNot Nothing Then
        '    For Each m As Machine In mwa
        '        m.Enabled = False
        '    Next
        'End If
        LogONOFFToolStripMenuItem.Enabled = True
        LogOnToolStripMenuItem.Enabled = True
        HelpToolStripMenuItem.Enabled = True
        AboutToolStripMenuItem.Enabled = True
        ViewManualToolStripMenuItem.Enabled = True
    End Sub

    Private Sub UnlockPermissions()
        Dim sp As New SecurityProfile_(mcn, ud(4))
        For Each i As ToolStripMenuItem In mcc
            If sp.GetProperty(i.Text) Then
                i.Enabled = True
            End If
        Next
        For Each m As Machine In mwl
            m.Enabled = True
        Next
    End Sub

    Private Sub CreateMenuControlCollection()
        For Each mi As ToolStripMenuItem In MenuStrip1.Items
            mcc.Add(mi, mi.Text)
            AddMenuChildren(mi)
        Next
    End Sub

    Private Sub AddMenuChildren(ByRef mi As ToolStripMenuItem)
        If mi.DropDownItems IsNot Nothing Then
            For Each c As Object In mi.DropDownItems
                Dim mc As ToolStripMenuItem = TryCast(c, ToolStripMenuItem)
                If mc IsNot Nothing Then
                    mcc.Add(mc, mc.Text)
                    AddMenuChildren(mc)
                End If
            Next
        End If
    End Sub