Operating System: Unix or Linux (Note: might work with other versions of this os.)
Before downloading: Run Free Scan for Instant Driver Updates
If you do the install as given then it will install the driver for the current boot session. You will have to add a line to one of your system rc files (probably in /etc/initrc.d would be best) to get it to load at boot time.
Once loaded you can use /dev/modem just like a normal modem on a serial port. I used kppp to get a connection up and running and uploaded this file during that first session...