Well, your question is a little unclear, but there are several options. If by PC you mean Windows, you can use Samba (which compiles on Sun platforms AFAIK). If you mean a Unix variant, I would recommend NFS. Both of these solutions would allow you to access files as if they existed on your own system (they will appear in your local filesystem).

Once again, if you really want us to help you, you will need to be more specific. And you should get a username. People have a tendency to take you more seriously then.

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Brian