Publish offline courses to USB

I am wanting to publish courses to USB for people who do not have access to the internet, there would also be multiple students using one training computer. The publish to CD/USB is an option but the tracking file that allows people to resume where they left off is stored on the C: drive, this creates problems if multiple people are using the one computer as one person could over write someone elses data if they click on restart. I was wonderring if someone has found a way around this problem. The ideal for me would be to issue a person with a USB that they would keep until they finished the course but this would mean redirecting the tracking file to the USB. I did contact Articulate for support but they pretty well scrubbed me off.