See the link in post #2 for detailed instructions on removing the radio. There are four bolts holding in the radio, two on top and two on the bottom from what I remember, when I looked at pulling mine (an 05 LE) out. However, I could be wrong as to the bolt locations as I attempted to pull the radio back in 06. The link above seems to indicate the four bolts are under the radio.
ETA: Ooops I was wrong about the locations, they do appear to be on the bottom of the radio. This link has better pictures where the guy circled where the bolts are in one of the pictures of the disasembly process to get at the radio.
http://www.net4free.org/Other/nshahzad/stereo.html