It does seem like it might be worth a try since it isn't very much $, especially compared to a steel drum. One concern I have though is that it states that it might not work on windows Vista, so this is probably a fairly old program. It would be worth contacting them before ordering and telling them which Windows operating system you have to make sure the program will work.
I'd love to hear about your experience if you do purchase this!
I sent you an invitation to join a group on the site that has discussion of purchasing steel drums and about steel drum simulators.
I'm still working on finding a PC simulator. Meanwhile though, do you have a smart phone at all (iphone or android)? You can download simulators for both of those. Ipad is even better of course because the surface is larger.
Anyway, I'll keep searching the internet as I have time for a PC one.