[R] Two questions on R and cairo/Cairo

[r-help at byrman.demon.nl]

  On a headless Linux server running R 2.9.2 I would like to enable 
support for cairo, but capabilities("cairo") keeps on giving me FALSE. 
Is it possible what I am trying to do or can this only be achieved at R 
build time? I do not have administrative rights on this server.

After compiling cairo-1.8.10 and its dependencies from source in my home 
directory, I finally managed to install the Cairo package (capital C). 
Although capabilities("cairo") still gives me FALSE, I am now able to 
produce graphics. Apart from convenience, is there any difference 
between using built-in support for cairo or using the Cairo package?

Carsten