As a new release is prepared for distribution, please consider basing the code on .NET 4.0

One important reason is that it will be trivial to interface to
very powerful and well supported 2D and 3D graphics, in particular www.dislin.com
which is free despite the .com

This will almost instantly give the powerful SMath Studio even better graphics than
MathCAD has struggled to get to.

Thank you for your efforts!