Yup what Ian said, you should be able to find a third party cable that can work with their demo software for about $50 - let me know if you can and I'll go digging.
Their newer cables are all hardware dongles for the software, which makes it easy to move the software from PC to PC, previously you had to jump through many hoops.

Is it worth it? Personaly not to me, but then I have access to sevelar people who have one and hence can get what ever I need done for a beer or two.
I think there is an on-line demo of their software on their site which will give you a better idea of what you can do.
Good luck.