desktop dyno help

Ahhh youthful excitement.

What you need, aside from Desktop Dyno, is a couple good books (or google searches) on internal combustion engine theory.
Then (I)ntake (V)alve (O)peninng and (E)xhaust (V)alve (C)losing would make more sense. It needs better info than the basic "268duration and 470 lift" you will be reading in all the catalogs. Even with that better info, it's still basically a cool video game that assumes a lot to get it's numbers. Read and learn..then see it for what it really is. It's decent to map trends, but it wont get you bible truths.