Operating System: Windows 95b (Note: might work with other versions of this os.)
File: IRISPen Standard 4.
The bad news you have to pay 52 EUR. (That's still cheaper then a new IrisPen or C-Pen.)
You may experience a communications problem at first, then just follow the instructions at www.irislink.com/opt/uk/support/patches/irispen/patches/patches/patches03.html - it's really simple!