Pull the radio out (by pushing in the little handles on each side of it, and then pulling the radio striaght out by holding onto the handles that pop out) and then look up in the hole it creates. You'll see a couple of screws...of course this is no gaurantee that you'll be able to get rid of the squeek. Good luck.

Remember that if you disconnect your radio, you'll need the code to reactivate it.
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1998 S70 T5 Emarald Green Metallic, 2004 V70 2.5T Ruby Red, Previous Owner of Black '94 850 Turbo Wagon. My cars have been running so well lately they've got me worried.