I was wondering if it's possible to a run a macro in one database from another database. Is there a command?

Basically, if i had db1.mdb, db2.mdb, and db3.mdb... and they all do some kinda import data to another database say MasterDB.mdb, is there some way I can have a macro or command in MasterDB.mdb that will run macros in all the other databases w/out me having to open each one up and run the macros?

Search the forums, but I beleive it is drive:\path\msaccess.exe drive:\path\MyDB.mdb /x macroname