all you have to do is sort their roster by salary and the top 5 players are the starting 5, in PG-SG-SF-PF-C order.
This is not completely true. Computer teams are known for having awkward lineups, and you also have to look at their past games to know who the reserves are. It would also be confusing to know who the subs and reserves are if the players are injured that have the best salary.