I've been in corporate IT where this happened. All company apps were built internally. None were able to run on anything past Windows XP. On top of my regular help desk, asset management, software project, and lease refresh program I was also somehow supposed to make the software work with Windows 7 as they had let the developers go. This is the same company that refused my sane security requirements and ignored just about everything until too late. I hear they have since outsourced IT and networking and it's failing dramatically, but they are saving money right?