installation problem for NONMEM7 G95 on server

Dear NONMEM users, I am trying to install NONMEM 7 and G95 on a server. There is problem when testing the compiler, Pdx-pop says: > Testing GNU g95 Fortran >>>ld: cannot open output file C:\gmtest.exe: Permission denied Looks like I do not have the right. Can I avoid the 'C:\' disk? If so, how should I set up the path? Any feedback would be highly appreciated. Best regards, Kehua