The Fm20.dll is NOT redistributable. You must have an application such as Microsoft Office 97 on the target system that installs Fm20.dll as part of its setup. You may not distribute the Fm20.dll as part of your setup, even if you purchase the Microsoft Office Developer Edition product.
As an alternative to having your end users install Microsoft Office, you can have them freely download and install the Microsoft ActiveX Control Pad, which also installs the Fm20.dll.
NOTE: The use of these Microsoft Forms components in your own compiled applications, such as those written with Microsoft Visual C++ and Microsoft Visual Basic, is not recommended or supported. These controls were designed and tested to work exclusively within Microsoft Office and its Visual Basic for Applications environment.