Ah that's great! Thank you so much! Can't wait to try it out. I'll let you know how it goes as soon as I get back to it.

Not a problem at all though, we all have more important things to take care of. I greatly appreciate your help!

I will get back some results as soon as I can.

Thanks again!

Hey, actually just got out of bed and uploaded it now so I don't forget. redownload it and let me know if it works! Sorry about the huuge delay.

Hmm, could u give me a few example images and which ones your trying to replace? I'll see if I can get anything working. I wonder if there is any header on these images.

Absolutely, I would like to try it out.
I have the arcade version of Blitz 99 and also 2000 Gold.  Both Hdd's have been replaced with a Compact flash cards/IDE adapters.  I can pull/backup the card and make a duplicate to test with. 

If you want to put together a quick procedure or walkthrough for me try out I can start from there.

I also have NBA Showtime to test with if they were developed in a similar way.

Thanks!

Thanks for the reply Jaker!

So, that's where I'm running into an issue. Even with an unedited file (replacing a file with itself) in GEDecompressor, the program tells me the file I am injecting is too big. I've tried replacing a file with a significantly smaller head texture and I don't get the message but the game locks up. The game is only crashing when it tried to load the new image. So for these head files, I can select the players and it freezes on the transition window into gameplay.