Thank you very much guys.  CaSTaway was the one that I was trying originally.  I will also try out GPX2 for sure.

I think I know what my error is due to.  I am getting no error message but the icon for the game (installed on the PSP) comes up as the file being corrupted.

I think that the error is due to me not keeping rigorously to the file structure that is required on the PSP.  I am going to read that guide and then re-install.  Will post here if I grow a brain and crack it!

thanks again,