Multiple instances of Preview in Mac G5

All,

I set:

(custom-set-variables
   ;; custom-set-variables was added by Custom.
   ;; If you edit it by hand, you could mess it up, so be careful.
   ;; Your init file should contain only one such instance.
   ;; If there is more than one, they won't work right.
  '(TeX-output-view-style (quote (("^dvi$" ("^landscape$" 
"^pstricks$\\|^pst-\\|^psfrag$") "%(o?)dvips -t landscape %d -o && gv 
%f") ("^dvi$" "^pstricks$\\|^pst-\\|^psfrag$" "%(o?)dvips %d -o && gv 
%f") ("^dvi$" ("^a4\\(?:dutch\\|paper\\|wide\\)\\|sem-a4$" 
"^landscape$") "%(o?)xdvi %dS -paper a4r -s 0 %d") ("^dvi$" 
"^a4\\(?:dutch\\|paper\\|wide\\)\\|sem-a4$" "%(o?)xdvi %dS -paper a4 
%d") ("^dvi$" ("^a5\\(?:comb\\|paper\\)$" "^landscape$") "%(o?)xdvi %dS 
-paper a5r -s 0 %d") ("^dvi$" "^a5\\(?:comb\\|paper\\)$" "%(o?)xdvi %dS 
-paper a5 %d") ("^dvi$" "^b5paper$" "%(o?)xdvi %dS -paper b5 %d") 
("^dvi$" "^letterpaper$" "%(o?)xdvi %dS -paper us %d") ("^dvi$" 
"^legalpaper$" "%(o?)xdvi %dS -paper legal %d") ("^dvi$" 
"^executivepaper$" "%(o?)xdvi %dS -paper 7.25x10.5in %d") ("^dvi$" "." 
"%(o?)xdvi %dS %d") ("^pdf$" "." 
"/Applications/Preview.app/Contents/MacOS/Preview  %o") ("^Html?$" "." 
"netscape %o")))))

The bit to pay attention to is:

"^pdf$" "." "/Applications/Preview.app/Contents/MacOS/Preview  %o"

However, every time I hit C-c C-v, another instance of the Preview.app 
is opened. How can I do this so I just get a single instance. This is 
on the G% Power Mac.

Thanks.