HOW TO MAKE YOUR FIREFOX ACCESS WAP SITES

I just found a method to change Firefox User Agent to Access Your favorite mobile/Wap Sites
>type "about:config" in address bar hit enter without Qoutes(")
>right click any where among the user agent list it brings select new>string
>type "general.useragent.override" hit enter.without Qoutes(")
>it asks for value that is ur UA. Just type "nokia N97" without Qoutes(")
that's all folks