How do i Change my Main Hard Drive (C) To Another Drive?

I Have Recently Tried to Download a Game.
It Takes 400MB Then To Install Another 800MB.

But Since My Main Hard Drive is C.
It Automatically Downloads To That Drive.
I Have 1G On that Drive.
Not Enough for The Download.

I tried Taking Files From that Drive to another Drive.
But then It Said These Are important Files And Moing,Deleting,Or renaming Can Damage Some Files.

Please Help Me Some one.

i Also got another Problem.
I Was Playing a game Called Lunia And When I Exited the Game All My icons Were Big And Huge on My Desktop.
Even If I open Mozilla Its SO BIG.
Someone help me out Please.

 

In the installation of the game you should be able to choose the designated space for the game to be installed on. If not then the game is shite.

 

For problem one, move the files anyways, for number two, just go to control panel and change your resolution settings back.

 

install to the d drive. that should work I think. I am not much of a windows user because it sucks, I have mac os x ( fuck all of you flamers) and I have no problems at all. If you flame my because I use macs and not pcs you have most likely have not used a mac just as SMR has not when I said macs where better. I tried both and macs come in first lol this is way off topic.