Inserting a value into an HTML textbox

If I have a text box on a web page like this
<input type="text" size=20 name="textbox" id=textbox">
How do I insert a value into the text box using vbscript?

<input type="text" size=20 name="textbox" id=textbox" VALUE="Insert This">


whg

I need to do it with VBScript not by setting the value before hand. Using JavaScript it would be something like this.
document.FormName.TextBox.value = "Hello World";

<input type="text" size=20 name="textbox" id=textbox" VALUE="%varname&">

Shouldn't your:
document.FormName.TextBox.value = "Hello World";

Actually be:
document.FormName.TextBox.Text = "Hello World";

use
formname.textboxname.value ="XYZ" in any event..


Sudharshaan