[SLUG] My computer is an idle lazy chips

["stephenblack@xxxxxxxxxxxxxxxxxxxxxx" <stephenblack@xxxxxxxxxxxxxx>]

This may not be a purely Linux question but I have a feeling that someone 
would have some advice.
My windows computer often spends a lot of time in idleness,
Does anybody know of a distributed computing screensaver so that I can put 
my computers idle moments to work for the good of all humanity.
I am particually interested in anything to do with curing deseases, bio 
chemistry, machines / engineering
I am scared of downloading troajaned software though