Comment by mschaef

> My first idea was to get the source cleaned up a bit and compile it again to 32 bit with Visual Basic 4, but I couldn't figure it out, it required some 3rd party libraries that I just couldn't get a hold of.

This was super common for VB apps. The original architecture of VB was, loosely speaking, a GUI container for various pluggable controls connected to a BASIC runtime. The number of controls that came in the box would vary depending on how fancy a version of VB you bought, and you could plug in additional third party controls in the form of "VBX's" - Visual Basic eXtensions. Even though VBX's were designed mainly for GUI controls, they were the easiest extension point for VB and got extensively used for all sorts of integrations until OLE Automation became more prevalent. (Roughly contemporaneous with the switch to 32-bit.)