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g1smd - 7:03 am on Jun 13, 2010 (gmt 0)
The topic of redirecting comes up every day here. In this case you'll need two lines of code (a RewriteCond looking at QUERY_STRING and a RewriteRule with the [R=301,L] flags), and there are several thousand similar prior examples here in this forum.
What have you tried so far?