Hello, Sr. Gallego;
First, to give them their due, Siemens' Step5 from version 7.0 works in a Windows environment, windows and all. No comm. problems from version 7.02
There are other software producers who have alternatives. TransTech Inernational makes a software called S5 for Windows that uses an integrated Windows environment for S5 programming. It is also much cheaper than Step5.
Have a look at the following website: