Thanks for the great input guys! Actually, my real goal is to solve variables with simultaneous equations. The unknown variables will be inside a NORMDIST expression. It basically has something to do with Black-Scholes option pricing (specifically, the Merton model for finding expected loss from default). Excel's been giving me lots of grief so I was hoping to use Maple instead.

Oic. Great! Thanks again Scott and J. Tarr! I appreciate it.

Hmm, I'm still a bit confused. Maybe an example would clear things up. Say in Excel, I wrote down : =NORMSDIST(0.2) How would that appear in Maple? Like this? with(Statistics): X := RandomVariable(Normal(0, 1)): evalf(CDF(2, 1)); I think I'm way off, sorry.

Hmm ... worth a try. Thanks Scott.