At some stage they might still be more stuff to configure here, right ow you are able to configure combo's for useage of an AI. But right now (since there are not many really usefull combos in portal yet) the AI does not make use of the definitions. Well you can do them anyway :-).
Combo edit
Its more or less self explanatory.
One thing:
Force level:
that should be a value which gives the AI a clue how much he should "wait for the combo to be complete" befor he uses the cards as single cards.
internally the AI should treat combos as a "single" card, that will probably the most easy way to implement it.