How to open multiple sites by using vb.net

When we click on a button multiple sites are open in Mozilla or internet explore in tab .......

i have tried this

System.Diagnostics.Process.start(webiste name)

but it open only one site at a time.......if we write this line two time on click event it open second website like this
System.Diagnostics.Process.start(website1)
System.Diagnostics.Process.start(website2)

but i want to open both website........

Plzz suggest..........

Hi,
I think you have to give the Browser filename as process name and Sites as Command line parameter to the browser.

For Example

FireFox www.Google.com www.Yahoo.com

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