I also need to curve fit a low order polynomial y = a +bx +cx^2 +dx^3 through 4 (x,y) points. I appreciate (and understand) the Gauss Elimination method.

My question is, "is there a function in Visual Basic 6 that I can use which finds the coefficients for me"?. I guess I'm thinking back many years to school where I think I remember "determinants" or something like that.