Re: D&D Classes in D20 Modern!
use Unearthed Arcana, it has methods to use Class based defence bonuses, armor as damage reduction, basicly its full of alterante rules for D&D, many of which found their way into D20 Modern.
only two problems:
1 twenty levels + epic in D&D Vs. ten levels and no epic in D20 Modern
2 magic is nowhere near as powerfull in D20 Modern as it is in D&D.
otherwise have at it, and good luck.
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