heres how u do it... the old hack mission.sqm...
plave 2 candidates to become guba and angelina - make sure everything in the init line is as u want, cos from here on there's no going back otherwise they revert to normal soldiers...
open the mission folder and tge mission.sqm - find you 2 peeps (name them to make it easier) and where it says 'vehicle' you replace the 'soldier' with 'GeneralE' for guba, and 'SecretaryE' or 'Angelina' for the secretary (can't remember which one) - save the changes - open up the mission in ofp and bingo - there u go... whatever u do, DON'T double clickj on them and then press 'ok' - if u do, they return to normal soldiers.
and... as a side note... im very sure this would all be in the FAQ if u had tried to search for it