I'm with cdrsubron7. Patch 1.4 is "all inclusive" of all other patches preceeding it. If you've got the original game disk (v1.0, like mine) just download and run the patch 1.4 after doing a "clean install" of the game.
Make sure you clean out your old "SH4" folder.....found in the Documents folder. This folder (not to be confused with the "Silent Hunter Wolves of the Pacific" main game folder) is automatically made when the game first starts. It holds your game options settings, and any game saves when you make them. You should get used to cleaning out this folder every so often if your getting problems with mods. It's this folder that may save a changed modded file that you no longer use, but it gets put into use because its part of the saved files you made while the mod was loaded.
I don't have Win7, but Vista was terrible with games put into the Programs(x86) folder. I learned to
always install games in another folder other than the default Programs(x86) folder. Make a new folder under the C: drive, and name it "My Games"....put the SH4 game there.
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One thing no one asked:
Do you have the original game disk? Or, are you using a Downloaded version of the game? What version of the game is it supposed to be? One way to tell is to do a clean uninstall/reinstall, then run the game without adding your first patch. The game version is found in the lower, right corner of the "main" game screen:
It's been reported that Steam downloads are pushing out version 1.3's!!