I managed to screw something up on my G5, 10.4.6......Mail no longer will open. I was trying to fix spell check and decided to try Pacifist--to reinstall an older version of mail off of a G5 install disc--with the idea I could update to the lastest version via software update. Basically, I was trying to burn down the barn to get rid of the rats. I did. I thought I "updated" the mail package with Pacifist, but the result was that Mail acts like it is opening (icon flashes briefly) and then nothing. Please help. Can you reinstall just Mail 2.0?