I looked in the TDS helpfile, & I think it means that I need to get another licence, so I thought I'd make sure, plus I have Wormguard as well. I just got another system with XP Pro, & it's going to be networked with my Win98 system. [I'm not using it yet, the teckie didn't do as I asked, & he now has to do a format, lean install & re-partition to my original spekkies]. KVM will allow me to use either system. So do I buy new licences for TDS & Wormguard now?