Read this FAQ if you have not already:
http://www.wowinterface.com/forums/f..._howto_install
Pay special attention to the second and third sections. If you're still having issues, come back with more detail about what you're doing.
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"You'd be surprised how many people violate this simple principle every day of their lives and try to fit square pegs into round holes, ignoring the clear reality that Things Are As They Are." -Benjamin Hoff,
The Tao of Pooh