Can=?ISO-8859-1?B?tA==?=t open driver

[Chris Pastl]

I´m interested in developing applications on Mac OS 9
which can connect to a USB driver.
So tried to open a driver called "USB Serial Driver"
using the following code:

open driver "USB Serial Driver" for binary update

But the program says that it "can´t open that file".

What´s wrong?

The Driver is successfully installed in the extensions folder.


Regards,
Chris