[AccessD] Access reinstalls when switching from 2002 to 2003

For several years I have had Access 97, 2002 and 2003 installed on both my main PC and laptop, and switched back and forth with no problem. Recently each time I open 2002 after having opened 2003 or vice versa the preparing to install window opens and it reinstalls prior to opening. Everything works OK it's just annoying and time consuming. Anybody know a solution? It may have something to do with an auto update.

Thanks

Bill