[Doolar]

dug around on SubSim and found this from years ago. Hope it helps.

1. unzip the zip file.
2. Highlight the 4gb patch. R. click and copy.
3. paste it too your SH3 main game folder.
4. Open the patch and set the browser to your main game folder which might
be something like this C:\Games\SH3.
5. The wizard should locate your SH3.exe and then patch it.Once patched that
is it.

if your doing it and it's not working, then sorry, I'm at a loss. I myself use H.Sie hard code patch and the the 4gb patch is included, so It's been along time since I've done this.