Hi Rashid,
First, welcome to Website Babble.
Here are a couple of examples of a 3-column layout that I found on Lisa's 2createawebsite.com:
http://www.2createawebsite.com/templates/template1.html
http://www.2createawebsite.com/templates/template4.html
You can get the code from the links above, modify it however you like and upload it to your web host, and you're good to go!
Hope this helps.
Sherif