use the Request.browser property to get access to the HTTPBrowserCapabilities
object of the client
eg.
Dim clientbrowser as HTTPBrowserCapabilities = Request.Browser
' extract properties such as
' clientbrowser.browser
' clientbrowser.version
' clientbrowser.platform
' clientbrowser.CLRversion.ToString
' clientbrowser.EcmaScriptVersion.ToString
' clientbrowser.Javascript
' clientbrowser.MSDOMVersion.ToString
' clientbrowser.W3CDomVersion.ToString
' etc