Ed, buddy, did you read his post? Really, please try to form more appropriate answers, or at least wait until a first "constructive" reply has been given...
The PPC is Mac's architecture. There are versions of linux for MANY different architectures out there, part of the greatness of linux and it's versatility.
The "PC" version of any distro is going to be located under a folder called "x86" or "i386" "i486" "i586" and/or "i686" The difference being how advanced your CPU is. IF you've got a relatively new processor, you'll want to try to get i686, however you may only find i386 or i486, no worries as these work fine.
Go to your favorite Mandrake Mirror, look up the tree until you see a mandrake-iso folder. Nine times outta ten, these will contain normal x86 images that will work on a PC.
Just about every distro I've come across has at least an x86 version. There are some, like Mandrake, who have also put out other verisions such as Alpha for the alpha processors, and PPC for Mac's.