Command prompt Copy technique: below image shows how to navigate the assemblies stored in Global assembly cache GAC. Here in above image we have copied the System.Web.Extensions.dll from GAC and stored it in C: drive later we will put in ASP.net Ajax enabled web site so that it will support the Applications mounted on Shared host not supporting the ASP.net 2.0 web extensions. Browse by adding "\" after the assemblies: On some windows OS it works and for some os it dosen't. For the OS on which you are unable to browse the folder as I shown here you can refer the Next technique for browsing the folder For os Which dosen't supports the technique shown above.Folow below technique I can be reached satalaj (at) gmail.com. Thanks, Satalaj. www.asp.net.