Sorry about that, I'll try to get it done when/if I finish the DS project I'm making for the neoflash competition.
(for those interested, the project in question is a "first person shooter maker" kind of app with an embedded level editor; I doubt I'll finish it in time but so far my tests have been promising in terms of feasibility)
Yay. I'll keep holding my breath then! GL with the new project. Sounds like the old Shoot-em-up construction kit I used to have on the Amiga 500+.