logon script problem

Having a problem with a function in the logon script. the line is:

copy \\servername\screen\grc.dat C:\progam files\navnt

this command is supposed to copy the grc.dat file from the server into the c:\program files\navnt. If I change the "C:\progam files\navnt" path to just "c:" it works fine. if I change it to "C:\progam files\" it will not work so I am assuming that this is the problem..