Windows 2000 Driver for Supra Express 56i Pro
The Supra Express 56i Pro failed to work with modifications to the Windows 2000's HCF modem driver (modifications worked for other HCF modems though).
This possible solution adds the Win2000 HCF modem driver into Dimond's driver setup for NT4.
Small modifications have been made to the inf files.
"Remove" the existing modem through Control Panel -> "Phone and Modem Options".
Then run this installer.