The exact message that comes up when I double click the OSX and Bundle installer Icon is "Mac OSX cannot be installed on this computer. Please consult the documentation for a list of supported computers"
Im not sure about the firmware, how do I check if its ok / out of date..
Thanks for your help, ill give those links a try now..
I also just restarted the Mac holding the alt key and it wont let me boot from the CD there either! Ahhh the pain of computers!! Thanks again mate.
You will need to use a retail version of Tiger. Sounds like you are using the recovery media that was bundled with another Mac. These cds/dvds are designed to run only on the specific hardware they shipped with.