Dear Senthil Kumar D,

Thanks you it was help full link

function XDocument::OnLoad(eventObj)
{
//Create a WScript.Network object, which provides access to the user data
var objNetwork = new ActiveXObject("WScript.network");
//Retrieve the UserName and write it into the my:UserName field
XDocument.DOM.selectSingleNode("/my:myFields/my:UserName").text
= objNetwork.UserName;
//Retrieve the UserDomain and write it into the my:UserDomain field
XDocument.DOM.selectSingleNode("/my:myFields/my:UserDomain").text
= objNetwork.UserDomain;
//Retrieve the ComputerName and write it into the my:ComputerName field
XDocument.DOM.selectSingleNode("/my:myFields/my:ComputerName").text
= objNetwork.ComputerName;
}

it also can retrive computer name

Regards
sameh