noobie question about including any file in my rpm

[Douglas Phillipson <douglas intermind net>]

I have a GNU build system gzipped tar file in the SOURCES dir, I have a 
file, that is not compiled but it is tracked by the build system.  I 
can't seem to get it included in the RPM file.  How do I get any file I 
want put in the rpm file? I tried putting it in the filesystem and 
declaring it in te %files section but I get an error from rpmbuild that 
it can't find the file.  What might I be doing wrong?

Thanks

Doug P