Looking For Older iPhone SDK?

I'm starting to get into iPhone dev, but needed an older iPhone SDK that works with OSX 10.5 (Leopard). Of course, Apple makes it darn near impossible to find older SDK's, with their website only pointing to SDK 3.2 and SDK 4.0Beta, both of which require OSX 10.6 (Snow Leopard), which would be a $30 upgrade. This seems quite silly; since I can compile Microsoft .NET executables for Windows from within Linux, why can't I use the new iPhone SDK in a 6-month-old version of OSX?

The old SDK is still on Apple's server, it's just really hard to find. You still need to sign up as a developer with Apple, but a list of old SDK's can be found at http://iphonesdkdev.blogspot.com/2010/04/old-versions-of-iphone-sdk.html

Happy hacking!