I've been trying to teach myself VB.net in my spare time, so for my first app I made a GUI that has devz3ro's patching exe's built in (hope he doesn't mind) to patch to the NFL fever version. Here's how it works.
You select an xbe file, it will check the MD5 hash (against the known values) to see if it's patchable. If it is, another button becomes enabled and allows you to select the patched xbe's output location and filename. If you select an invalid xbe to patch, it asks you to select another.
If there is a need/request for this, maybe someone here can host it. It's about the same size as devz3ro's zip (530K). Might be a little more noob friendly.
Current Limitations: I don't seem to have the correct MD5 hash for the 5960 update.xbe so it doesn't work for that version. It's an easy fix once i have the correct hash. n/m thanks to devz3ro this is fixed...
Oh, and you need version 1.1 of the .NET Framework installed.