virtualbox.org

Maybe you can try MS-VPC 2007, I had installed Novell Netware 6.5 with SP6 over it, running well like a real PC.

You can try Virtutech.Simics.

PIV dual core CPU does not support the intel VT-x technology, you can try it on core 2 duo CPUs.

You can change the NIC to AMD PCNet PCI II/III, Pls read the UserManual chapter 6.

You can try Virtutech simics.But it so slow

I didn't used MS windows 1.x and 2.x, But Maybe you need to use MS DOS 2.x or 3.x first, No to use MS DOS 6.22.

Go this web site and download a old version MS DOS to try it again, best wish!

http://vetusware.com/select-by/category/OS/?cat=1

Only one. I mean per guestOS