LATEX Command in R in Windows 7

Hi guys,

I have 64-bit Windows 7 machine. I need to execute the "latex" and
"pdflatex" commands from R to print out tables in pdf.

I use R 2.13 64-bit, and I have GSView, GSScript and TexWorks
installed.  I remember i did this once but I forgot the next step.
What shall I do?

Thanks,