We had a rather long discussion about dll issues and in the end we found the software in question no longer ran on Windows prior to XP. Be sure your software supports that OS.
Next, some forget how to install Windows. After you install the Microsoft OS you have to get your notes out about your machine and the drivers you need (can be as many as ten!)
I'm still running the ancient Windows 98 on my other computer. I ran into a situation where I had to reinstall the OS. Upon completion, I attempted to work one of my programs when an error message indicated that a device isn't working on my computer. I don't know what device it could be, as everything seems to be in working order, except the color is fuzzy. Help!!!!! I hope you can. Thanks.