First of all, please be sure that you purchased the right model number (3CRWE62092B).
Next, download and save both installation packages ("3Com Wireless Drivers" and "WLAN Monitor Utility") from the link, which was provided in the email with subject "Your Alpaxo Software Customer ID."
There are then two ways to copy the software to the Jornada:
Choice 1) Copy the two CAB files you just downloaded onto a CompactFlash card; then insert it into the Jornada's CompactFlash door on the bottom.
Choice 2) Use ActiveSync (should have come with your Jornada) via serial cable, infrared, bluetooth, or network connection to copy the two CAB files you just downloaded to the device. ActiveSync has an "Explore" button in its toolbar which you may use to browse the device and copy files to it.
Once the files are accessible on the Jornada, double tap each file and follow the prompts (clicking OK) to install each CAB file. After both CAB files have been installed, you may now insert the wireless card into the Jornada. Follow the on-screen prompts to select the country, which will require a soft reset. You may bring up the wireless manager by double tapping the 5 bars icon in the tray in the lower right corner.
Please let me know if you have any further questions.