I'll try and post any good advice here that I think might be useful to you.
Tips and Troubleshooting
1. If, like me, you purchased the All-American Sports version of FBPro 98, it came with a built in league creation error. Installing these files into your FBPro subdirectory will fix this.
2. If you are running the All-American Sports version, rename your subdirectory (The one that starts with "AAS") "FBPro98." Trust me on this.
3. If you don't have it, you need the version 1.08 patch. You can find it at this site under "Patches & Info":