> VB.Net has a bezier function
VB.NET has the System.Drawing assembly which puts a thin wrapper around the GDI+ API, which can also be used by VB6 as well - but not easily.
You'll need a COM wrapper or type library.
Do search in this forum for dseaman's gdiplus type library, and you should find some of my examples of using this, albeit not one specifically for drawing bezier curves.