Great to hear you've moved to OSX. Kalyway was a good distro, 2 years ago. It can't be updated to the latest version though. You should look for iATKOS 7i, it was the last of the Leopard distro's and will allow you to get to the latest version of Leopard, which will allow you to install more apps. You've probably found that many apps won't run on an outdated version of Leopard. That's just how the Mac world works, you stay up to date, or you quickly get left behind.
I moved my wife's Hackintosh up to a quad core CPU with 4gb ram and a GeForce 9400, that thing freakin flies. It's running in 64bit mode on Snow Leopard (10.6.4)..