Response.redirect in Context Menu

Hai team ,
iam having a Context menu with 4 items in it ,with the call back feature , in 2 of them i want to redirect them to som other page.while trying to do this iam getting an exception that Response.redirect is not supported in CallBack . how can i acheive this functionality , iam using the event dpc_EventMenuclick ,then taking e.Command according to this iam performing the menu related activities .