http://www.mandriva.com/en/downloadlinux is good but is some kind of limited
cause .exe files( windows excutable files) cant run on it
but it has an emulator to run it
linux mandriva is known for its visual appearance and its completeness...
it doesnt get any virus and it has almost everything
its "paint" is like photoshop
it has a downloader
and best of all it is open source
if ur not sure
u can devide ur hd into two partitions
and have both os like mine
install windows 1st and install linux
dont forget when u install linux include the boot of windows
so u can choose at startup^^