JamesBond and TaZoC (I believe) are regular users of your VB. They possess skill that us motals may not posses at this time. Might be worth a PM asking for advice or assistance.Actually, an ISO like that might not be a bad idea, but I'd be clueless where to begin. I've never built or trimmed a Puppy before, but I'd think a somewhat cut-down Puplet would be ideal, to give the VM some more breathing room on whatever hardware gets used. In any case, that would be a bit beyond my scope.
Their may be other, too, who have the skills and are users, such as Pemasu or others.
Reason that I mentioned 64bit is that most/all 64bit PCs I have ever worked with started at 1GB+ RAM. Also, I believe a 64bit platform would adequately run 32 and 64 bit OSs that might be booted a virtual machine.
Hope this helps