Opening Browser Windows from TreeView

When the user clicks a button on my form, it goes through a TreeView where Checked = True. It finds all the checked nodes and runs a sub which will load multiple webpages (at the same time) based on which of the nodes were checked. I know that you can use the following code to load a single webpage:

VB Code:

System.Diagnostics.Process.Start("http://www.google.com")

but I need to be able to open multiple pages at once. How can I do this?

I also need to know how to determines which nodes have been checked. If only VB.net accepted MySQL code:

Code:

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SELECT FROM Nodes WHERE Checked = True

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How can I accomplish this with VB.net?

Thanks,