InfoPath Dev

Thanks Mahitha for your reply. but i still do not know how to solve my problem. i do not know why it gives me that error message. and what should i do so that i can sign it in browser.

im having error when click on the hyperlink to sign the infopath form which i open in browser from SharePoint 2007. The error is ''Installation of an add-in component needed for digital signatures failed. You may need to modify your browser security settings.'' but i can successfully sign my infopath form if open using InfoPath. I tried to ...