Yes. We have lab PCs here still running Windows NT because the upgrades for the hardware are either unavailable or would be prohibitively expensive (> $20K) and

Yes. We have lab PCs here still running Windows NT because the upgrades for the hardware are either unavailable or would be prohibitively expensive (> $20K) and still not implement all the functionality. We tend to hide these from our well-protected corporate network behing a boat-anchor PC running XP with all the service packs and antivirus. We will run these systems until they can no longer be repaired because management does not want to spend the money to replace them.