I can't tell you if Lion will actually run on 32bit (64bit Finder? iTunes?) but you can make the installer go by bypassing is64bit in the OSInstall.mpkg. I haven't tried it on a 32 bit system. Maybe iMac600 knows.
You can easily find your board id with ioreg:
You can easily find your board id with ioreg:
Code:
ioreg -lp IOService | grep board-id