What is VBScript? VBScript is basicallly VB implemented into webpages, for example, inputboxes that pop up in IE.
Example of VBScript:
<script language="VBScript">
<!--
Dim Text As String
Text = InputBox("What is your name?")
document.write Name
-->
</script>
Why use VBScript?
Because it is BETTER THAN JAVASCRIPT, i dont care what people tell you.
And because it makes you seem smarter when ur creating web pages.
Another Example, making cookies maybe

<script language="VBScript">
<!--
Try
My.Computer.FileSystem.WriteAllText("C:\Temp\Web Pages\Temp.txt")
Catch fileException As Exception
Throw fileException
End Try
-->
</script>
this will, to my knowledge, create a file named Temp.txt in that directory, if it exists, but that is standard VB, i dont know if that will do anything, i know nothing.
How to code....
Pretty much, you need to know VB, here is all that is new
type in
<script language="VBScript">
<!--
(type in your VB Code here)
-->
</script>
that is pretty much it