When he says "special glue," he's probably talking about thermal epoxy or thermal adhesive--something that will not only conduct heat but will bond like superglue.
If you want the best, check out <A HREF="http://www.arcticsilver.com/" target="_new">Arctic Silver</A>. There are other brands besides Arctic Silver; I think <A HREF="http://www.3dcool/" target="_new">3DCool</A> has carried some brand of thermal epoxy in the past.
Kelledin
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