Hi I have registered a custom form using Exchange Explorer tool for a mail item. If I set the value of urn:schemas-microsoft-com:office:forms#browser property as * then my form is getting executed on opening the mailbox from any of the browser. I want my form to be executed only when client is using IE. Hence I have set its value as "Internet Explorer". However I found that now form is not getting executed from non of the browsers. Can anybody please tell me what should be the value of urn:schemas-microsoft-com:office:forms#browser if I want to execute my form for IE only. Thanks Atul