two fast questions!!!

[Revracer]

first i want to ask how i can drop the temps on my MM, after only about 5-10 minutes it was hot. and that was just bashing. long racing itll probly get hotter? this is in a revo by the way with a mega motor. no ccbec yet but it is comming. second, my castle link wont download? i tried taking it from the site too and that didnt work. i keep getting a warning saying that continuing the installation will disrupt or distabalize the way my computer performs and that its possible to completely stop my computer?