MS Access update — not

Had an MSA ’97 database that I converted to MSA 2002. The MSA installation is on a network. I can open up the db, but my colleague cannot. So, she has to use my PC to open it. Not the most convenient. I tried to update her MSA, but we get an error message about there needing to be a PRO.MSI file, which my understanding is from an Enterprise edition of MSA. However, we don’t know where that copy went. I tried to uninstall that version of MSO and reinstall a “regular” MSO, but we get the same error message when I try to update it, and the same error message. What can we do???