I need to start with my home page www.tesco.net

Goto your home page.
On your browser click Tools>Options>Main
use current page..

Voila.. you are done..

Hi,
If you want to open your site whenever your computer is switched on, then follow these steps,
1. Right click on desktop and select new -> shortcut.
2. In the next browse for item to open window ,type the address "http://www.tesco.net"
3.click next, give a name to shortcut and finish. A shortcut for your website is created.
4.click and drag this shortcut onto Start menu -> programs -> startup
4. That's all. Whenver you restart or switch on your system, the shortcut will be executed automatically during system startup and your website will be opened for you.
If you want to start with your home whenever your browser is opened, then follow these steps.
1. Goto internet explorer (or your browser) -> tools -> options / preferences -> general / main.
There you can enter your website url for homepage.
I hope this is helpful to you

Open internet explorer. Goto www.tesco.net then select tools then internet options on homepage click "use current" then click "apply". This will set www.tesco.net as your homepage.