I\'ve now got everything to work properly on my Mac OS X 10.6 machine so that I can create decent looking LaTeX documents with Sweave that include snippets of R code, output, an
The best solution is here: you create a new *.engine for TeXShop to use, then typeset using the shortcut or the 1 button.
http://cameron.bracken.bz/sweave-for-texshop
Cameron is also very responsive, so I highly recommend his solution.