I am looking at replacing a Genesis for DOS HMI with a Win CC HMI. Currently our system is using a Step 5 PLC. What I am looking at is using a Win CC HMI and converting the Step 5 program to a Step 7 and putting Win AC soft PLC on the HMI computer. This will all be running on a Windows 2000 system. Does anyone out there have any known problems with this or have any suggestions????