[R] Install problem Rgraphviz on Mac PPC

[Alex Biedermann]

Dear all

I am trying to install Rgraphviz on a Mac PPC, Vers. 10.4.11, under R  
vers. 2.9.
My graphviz is installed at "/usr/local/graphviz-2.14".

I get the following error:
...
configure: Using default directory /usr/local, consider specifiying -- 
with-graphviz
configure: error: /usr/local/bin/dot not found.  Check Graphviz  
installation.
Fehler: configuration failed für Paket ‘Rgraphviz’
* Removing ‘/Library/Frameworks/R.framework/Versions/2.9/Resources/ 
library/Rgraphviz’
* Restoring previous ‘/Library/Frameworks/R.framework/Versions/2.9/ 
Resources/library/Rgraphviz’
Warning message:
In install.packages("Rgraphviz_1.22.1.tar.gz", repos = NULL, type =  
"source") :
   Installation des Pakets 'Rgraphviz_1.22.1.tar.gz' hatte Exit- 
Status ungleich 0
 >

Seems that it can't find Graphviz.

Thanks a lot in advance for any indications on how to solve this  
problem.

Alex