I want to write iterative mathematical calculations for a Visual Basic program. I have done this in VB but the calculations take a long time. I was wondering if C++ would provide a quick solution. I have extensive knowledge of VB but very little with C++. I just downloaded the Borland free compiler and figured out how to create quick DOS exe programs. How do I create ActiveX DLL so that I can access them in VB? I hear that C++ is a lot quicker and I figure that if I do the bulk of calcs in C++ then my overall VB application will be quicker. Please provide any advice that is out there. Thank you.