This example uses the AddToAddInToolbar method to add a button to the Add-In toolbar for a fictitious add-in called MyAdd.Dll. Setting ForceAddInToolbar to True ensures that the Add-In toolbar is loaded the next time Visual Basic is started.
You could modify the following in a small Visual Basic application to serve as a Setup for your add-in.
Sub Main()
dim x as Object
Set x=CreateObject("AddInToolbar.Manager")
x.AddToAddInToolbar sFileName:="C:\VB5\MyAdd.DLL", _
sProgID:="MyAddIn.Connect", _
sAddInName:="MyAddIn Title", _
ShowOnToolBar:=True, _
ForceAddInToolbar:=True
End Sub