Hello, Brian!
An error message keeps coming (up when I unzip) that says: "Error: cannot create C:/MINGW32/bin/c++filt.exe. Please press F1 for help. "
Also, for "mingw32-980105" an error msg: "cannot create C:/MINGW32/samples/dlltest/rcs/dll.c,v. Please press F1 for help."
As far as I can tell from the file names, they are not relevant for a working GPC. The file is something related to C++, and the second is for version control of the file `dll.c' and only relevant for developers.
So I recommend just to ignore the errors and to go on ... ;-)
Hope this helps,
Peter