Remove References Programmatically & How To Prevent Debug Error

i m working on an excel 2007 workbook with ms project functionality. in order to be able to use ms project from within excel i m using early binding. for those who dont know what early binding is: http://www.dicks-clicks.com/excel/olBinding.htm

this works fine if the user has ms project installed on his/her pc.

if the user does not have ms project installed i remove the broken references. this works fine.

but my problem is that when i remove the reference to ms project, my vba project will not compile correctly. thus each time when a user opens the workbook the user gets a "compile error in hidden module" , since the functions of ms project are not available.

for example i get a compile error in the following source


Public Function getResID(ResName As String, ActiveProject As Project) As Integer
Dim res As Resource
For Each res In ActiveProject.Resources
If res.name = ResName Then
getResID = res.ID
Exit Function
End If
getResID = -1
Next
End Function
i just want to know what i can do to prevent the compile error? would the use of late binding remove the problem? actually i dont want to use late binding since my source code is already very complex and it would be a huge effort to change it.