Selecting certificate from VBScript popup


sindhu here.I am using WATIR to automate a web based applicatio.when i
select a button in the webpage,I get a VBscript popup(Certificate renew
window).Popup has a list of certificate names in it.I want to select a
certificate by its name and click ‘Renew’ button in the popup.

Can anyone help me to select the certificate from a VBScript popup.