Hi just a quick post to point you in the direction of Easymod which at least allows you to edit battles (units, deployment, factions, the lot) outside of the pak, no hex editors - just using notepad. No restrictions on number of bytes either, so you're free to add in as much as you want (within the hard-coded game limits 20 units per faction, 120 or so soldiers per unit). I wrote a 2vs2 (Carthage & Gaul vs Julii & Senate) in just over 5 minutes.
You can find it at this thread on ORG or for more information go to this thread on TWC.
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