Hooking up a PC running Wilcom to a Happy machine

My place of employment just got a semi-old Happy 6 head machine (not sure what model) and I was wondering how easy it is to run a laptop running Wilcom ES straight into the machine? Ive heard this can be done and was wondering if anyone has any experience doing this.
Thanks
DST Dude

Location: 
United States

Makin' stitches my bitches.