Icon for Hard Disk missing?

I noticed that the desktop ICON for my 40GB Hard Disk disappeared after the last round of Hardy updates. Would any of you know how to get it back? Call it simplistic, but being a former Windows user, It was very easy for me to migrate my Windows files over to Linux. When I use the terminal (which I suck at) I see that my disk is properly mounted. I can not see the files under "computer" in Places either. Any help would be appreciated!  Thanks...

Ubuntu Tweak 0.3.0

I have found very usefull the "Ubuntu Tweak 0.3.0".             http://ubuntu-tweak.com/

When I try installing linux

When I try installing linux onto my labtop it says I don't have a hardrive? Anyone have an answer for what I should do?