I just installed Linux Mint on my hard drive. I think it's way better than SLAX, Nimblex, and a lot of other Linux distros. Also the installation was super easy. I still have Windows on my hard drive, but my main OS is Linux. For installation you just put the CD in and click the second option that says install like a program. I think it took about 20-30 minutes to completely install it on my hard drive, Windows took me around an hour. You can also customize Linux a lot more than you can Windows. You can download it at:

http://www.linuxmint.com/download.php