This is probably not the answer that you want to hear but I found this in another thread by Grigore Dolghin. You may have to upgrade your OS for development but it looks like you should be able to run FoxPro apps on 98.

Requirements for installation:

Operating system: Developing applications with Visual FoxPro 8.0 is supported only on Microsoft Windows 2000 Service Pack 2 or later, and Windows XP.

You can create and distribute run-time applications for Windows 98, Windows Me, Windows 2000 Service Pack 2 or later, and Windows XP.
Note Installation on Windows NT 4.0 Terminal Server Edition is not supported.