Problem in configurating CUPS

[James Ng Yuen Sum <james_nghk_debian_user@yahoo.com.hk>]

Hello,
I have installed CUPS, but my printer, epson photo 700, cannot work
properly, or even not work. I follow the instructions in
www.linuxprint.org, and then see the error_log file, but i do not know
how to read it.
I find in a line called "Hint: Do you have ESP Ghostscript installed?",
so i guess that the problem is the CUPS cannot find ESP Ghostscript, but
i have installed Ghostscript already, so that i want to ask what
arrangement i need to do after i install Ghostscript.

Regards,
James Ng