flag4, the 1316 network error message should be fixed if you run the Windows installer cleanup utility.Possibly the other one as well - try it.
Once you have a clean install of SH3, you can patch it, and then leave the game on one side while you use md5mate.
When you put the number in, do not include the file name ( like GWX2.exe), just the number. When you know each file matches, then you can click on GWX.exe.
It will come ok, don't give up or get rattled.
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