Wow how lucky you are. I have always owned Pfaffs; have three and now Pfaff, Viking and Singer are all owned by
http://www.svpworldwide.com/ - I have a Pfaff embroidery machine and I know that the .hus format will embroidery out on my Pfaff as well as the .pcs and the .vip formats.
I am impressed with all the wonderful reviews on the Vikings for I had always heard they are really nice machines.