Hiya!  Years ago ADV bought the rights to it.  I 
was wondering (after a couple of years) when they 
were going to finally release it, so I wrote and 
asked.  As of three years ago, they said that they 
had purchased the rights to the three or four  
episode OAV and were planning to release it but 
then other things came up that were more important 
and it got put on the back burner.  And there it's 
stayed.  :(  Maybe if more fans asked for it, 
they'd finally do something with it.  Hope that 
helps!