According to http://www.macupdate.com/info.php/id/3299 it will work on your Duo provided you have OS 8.1 and Disk Copy 6.1.3 or later. They are talking about Apple MRJ 2.2.6, so I am assuming 2.2 will work. Disclaimer: My assumptions have been wrong before. -t On Thu, 29 Apr 2004, Art Rice wrote: > Date: Thu, 29 Apr 2004 08:34:57 -0700 (PDT) > From: Art Rice <artrice66 at yahoo.com> > Reply-To: Duo/2400 List <DuoList at lists.themacintoshguy.com> > To: Duo/2400 List <DuoList at lists.themacintoshguy.com> > Subject: [Duo2400] Which OS needed for MRJ 2.2? > > Hi Folks, > I downloaded iCab for 68k machines, since I'm running > OS 7.5.5 and the power PC version needed a higher OS > (I think). The readme says I need Microsoft Runtime > for Java MRJ 2.2 for proper Java functioning. But MRJ > 2.2 won't install on my 2300c. MRJ 1.5 installed fine. > Question: If I upgrade to OS 8.1 will I be able to > install MRJ 2.2? (I already have an OS 8.1 CD but have > been hesitant to install it). > Thanks for any info. > > Art in Silicon Valley >