Seriously?! I thought I would have to buy a new Macbook, I use a old PowerBook G4 most of the time for development.
Ok, so I'm installing the iPhone part of the SDK right now on my PowerPC mac.
I've figured out a pretty easy way to install, a simple mod to the iphonesdk.dist file allowed me to do the install within the installer. It appears like I was on a intel mac.
If anyone wants instructions, I'm not to good with the terminal but I think this is how you'd do it:
1.) download this:
http://fs09u.sendspace.com/processupload.html it's the modded iphonesdk.dist files
2.) save that to your desktop
3.) mount iphone sdk disk image
4.) Terminal code:
$ cp -r /Volumes/iPhone\ SDK ~/Desktop/
$ mv ~/Desktop/iPhoneSDK.dist ~/Desktop/iPhone\ SDK/iPhone SDK.mkpg/Contents/
5.) run the installer.
Or in other works, copy the iPhoneSDK.dist file into to the installer package and replace theirs. Which can only be done when it's not in a read only disk image.
No idea if this will actually help anyone.
Sorry the download would have been:
http://www.sendspace.com/file/pndi52