vp3 files are embroidery files for Pfaff and Viking machines and can be opened and converted into other formats in most embroidery software.
I did rather assume that if sewjo has a Pfaff or Viking machine, that she would be able to open vp3 files.
vp3 files are encoded video files and you need special software to open them. WCN files - someone (keeponsewing??) gave us this info link back in July http://rumkin.com/tools/wcn/