Do you have x11 setup right? Ie can you do (outside of R) 'xterm &' or 'xclock &' ? In case you ssh to your machine, set the option in the config file, or use 'ssh -X some.where.com'. Dirk -- "Outside of a dog, a book is a man's best friend. Inside of a dog, it is too dark to read." -- Groucho Marx