I've been in the PC Blitz Basic community for a while now, and have been tracking the development of that particular conversion.
I was gonna post a link, but thought I'd get flamed.
There are some other Blitz Basic based game conversions out there, and I think you can access them at http://www.blitzcoder.com
Incidentally, if there are any budding GFX rippers out there, or even better, those prepared to rip GFX and touch them up, I'd be happy to code a conversion of a good retro-classic.
//edit : Miscellaneous grammar corrections.