Okay I solved it. Changed the code and now it works
Dim name As String = "Menu1"
Dim MyMenuItem As New ToolStripMenuItem()
MyMenuItem.Text = name
MyMenuItem.Image = Image.FromFile("F:\My Icons\firefox.ico")
AddHandler MyMenuItem.Click, AddressOf MyMenuItems_Click
AddHandler MyMenuItem.MouseEnter, AddressOf MyMenuItems_Enter
Namelist.Items.Add(MyMenuItem)
name = "Menu2"
MyMenuItem = New ToolStripMenuItem()
MyMenuItem.Text = name
AddHandler MyMenuItem.Click, AddressOf Me.MyMenuItems_Click
AddHandler MyMenuItem.MouseEnter, AddressOf MyMenuItems_Enter
Namelist.Items.Add(MyMenuItem)