Now i am working in windows xp my system configuration is P4,512ram,40gb hd and i want to install linux os as 2nd os. kindly help me to how i do this all.
Look here: http://apcmag.com/how_to_dual_boot_... And/or at the videos here: http://www.linuxnewbieguide.org/con...
Also some newer linux distro's offer a windows application to allow one to try linux in a dual boot. See wubi in ubuntu or it's clones. 1/3 of highway deaths are caused by drunks. The rest are by people who can't drive any better than a drunk.
Most Linux distros' have a option to install the OS side by side with Windows or another OS on the same hard drive.