Not exactly top on the list Tarantino films I’d want to see a prequel of but apparently a script has been written:
www.empireonline.com/news/story.asp?NID=27970
Tarantino isn’t involved so it doesn’t sound too promising. At least it gives us an excuse to put Jackie Brown on the schedule at some point (it’s the only Tarantino film we haven’t shown in the last few years).