Desk Top Dyno

I had the older version of DD5. But it doesn't work for me now. I can get pretty close on those numbers. But the engine is not assembled at the time. I still need to purchase a few parts. I'm trying to make 740 hp with a W5 head, 3.79 stroke 4.185 bore 422", solid roller and about 14 to one
OK, I have Mine running on an old laptop & XP, I use for that type of thing & nothing else. Haven't booted it up in a bit, but I'm sure it's fine.