BOAC
Sorry, been out all day.
If memory serves correctly, DOS 6.22 supports Windows for Workgroups, i.e. a networkable version. DOS 6.0 is the same minus the network (peer to peer stuff).
Again, strecthing my memory, I think DOS 6.xx only supports upto 1.9Gb. You may have to partion your drive to a value less than this.