Yes Nani even if u opend google the browser,if run another 
script,script will open another web page   and performs 
wat ever u wrote in that script.

For example i am providing a script for opening a 
google.co.in web page and seraching for 'search' on goolge.
Code:

Set IE = CreateObject("InternetExplorer.Application")
IE.Navigate "http://www.google.co.in"
IE.Visible = True
Wscript.Sleep 8000
IE.Document.All.Item("q").Value = "serach"
IE.Document.All.Item("f").submit()

Copy above code in notepad abd save it serach.vbs on desk 
top.

then click on file after saving it desk top.

this scripts runs and opens goog.co.in web page.
if u click once again it will open again a web page.

If u have any doubt please mail me

byee
Rajendra Prasad Reddy
rajendra_penumalli@yahoo.com
Test engineer
Hyderabad