Can someone help, or point me to a website or something with
instructions on this?

I'm trying to replace the original radio (a Philips DC680) in a 1990
Honda Civic. I've got the cover panel off, but can't figure out how
to release the side catches: they don't appear to be the modern
system of using a slide-in key to lift the side spring-catches.

It presumably involves removing the copper-coloured springs on the
sides that can be seen in this picture -- but I don't see how one
does that:

http://homepage.ntlworld.com/harvey....temp/radio.jpg

Any help greatly appreciated.

--
Cheers,
Harvey