procedure is ...
>> open ur CD ROM tray...
>> remove any CD in there,and insert ur Live CD
>> Close the tray with the button and NOT by the tray itself..
>> restart the computer
>> Go to BIOS
>> change the boot sequence ...so that CD-ROM is the first bot device..
>>save the changes and restart once again
>>PC will boot this time frm Live CD..
>>If the CD is working,u'll be able to work on Linux!!
pheeeeew....dat was the first time i gave such a loong explanation !...just kiddin...