Hi Soulsauce,
Here are the
iPhone 4 Specifications:
"Mac system requirements
Mac computer with USB 2.0 port
Mac OS X v10.5.8 or later
iTunes 10.1 or later (free download from www.itunes.com/download)
iTunes Store account
Internet access"
Witch means you do need to purchase 10.5 or 10.6 to sync your iPhone 4 to your computer. Assuming your computer can run 10.5+ Here are the
System Requirements for 10.5:
"Mac OS X v10.5 Leopard requires:
A Mac computer with an Intel, PowerPC G5, or Power PC G4 (867 MHz or faster) processor
512 MB memory or more
A DVD drive for installation
9 GB of available disk space or more
Some features require a compatible Internet service provider, fees may apply.
Some features require Apple's MobileMe service; fees apply."
If you have an intel machine you may want to check out the
Mac Box Set. For 129 Dollars you get almost 300 dollars worth of software! Including the new iLife witch works great with the iPhone. iPhoto can use the geo tagging info of your iPhone picture. iMovie 11 can edit your iPhoto's videos. Just remember to check the system requirements.
Cheers,
-TT