iOS iPhone OS install option unavailable in XCode 3.2.1

I just downloaded XCode and the iPhone OS option wasn't available when I installed it, but I did anyway. So now it can't start projects under that category. I have no idea what to do, I did the reinstall part and it's still an unavailable option. Is there a side one I can install or how do I fix this?

my mistake

I meant to say the iPhone SDK option was unavailable, but the entire download is called iPhone SDK so it makes little sense to me

don't think so

it says you need an intel based mac running 10.5.3 or something or higher. I have 10.5.6, but i don't know if it's intel-based, could that be why? i just deleted xcode and restarted the download in hopes that this time it will work. it's 1.7 gb tho, fuuck

p.s.

also, this is where i DLed it from:
http://img200.imageshack.us/img200/658/74480134.jpg

fizzuck

it's not intel-based, that's the problem.