Ok, it's not possible, it does not exist ! However it should be possible. I tried this heavy experiment: I use a 503CX with a 80mm exposed in "T" , plug the flash wire to the body and used the syncho flash to another camera (Leica M8) SO the Hasselblad beacame a heavy external cell for my D-40 used for my other camera. Not realy practical but it proves that a clever man could built and sell a integrated cell to convert the D-40 to a normal flash (not hasselblad-TTL-only !) No one wants to try to build this funny stuff here ?