I think I understand what you mean. It is as if all of them are in the commentry box at the same time, all making comments. Correct?
In any case why not make three different versions, onw with Agnew/Boycott one with Gower/Chappell and one with the two Aussies and so forth. Then make it so it is easy to change bewteen the three (with some sort of .bat file prehaps) so the user can change which commentators they want. So for example when you play Australia in Australia you can use the Aussie commentators but if you player England in England you could use the English commentators.
OK I hope that made sense, if it didn't say so and I'll try again!