ios sdk for Mac OS 4.2.11

Hi,

I am new to mac word. Last week I got a Power Mac machine with OS ver 10.4.11 installed on it, I have installed xcode from the installation disk & downloaded ios sdk 4.1 from apple website.

But when I tried installing ios sdk it troughs error saying upgrade to 10.6.1

Can anyone guide me in this regards? How can I installed ios sdk on my Apple server?

Thanks...

Sorry the title is

ios sdk for PowerMac OS 10.4.11

As per Apple, "To develop with iOS SDK and participate in the iOS Developer Program you must have an Intel-based Mac running Mac OS X Snow Leopard. Refer to the iOS SDK Read Me document for full details on system requirements." (source). You will therefore require an Intel machine with Snow Leopard (10.6).