Just checking back. Were you able to locate a Big Buck Hunter Pro dongle?Oh boy! We've had so many of those fizzle over the years. That's not the dell model, it's even older! I do have what you need though so long as you're trying to run just Big Buck Hunter Pro and not the Safari update/add-on levels from the same HDD which requires a separate dongle. Let me grab from my stock and follow-up in mid November.
It's here just have to find it, test it, and then verify compatibility with what you have on hand.