I have the new blackberry Z 10 and I cannot connect it to my mac because I have the OS X 10.5 and it requires a 10.6 or higher. How can I upgrade to a 10.6 so I can get my bb link to install??
You can get the 19 USD Mac OS X 10.6 Snow Leopard Upgrade DVD from the Apple Online Store and use that to upgrade.
Do you know, what Mac you have, since Mac OS X 10.6 Snow Leopard needs an Intel Mac (any new Mac since 2006)?
I'd advise you to also increase your RAM. You've only got 1GB in there now. Check at Everymac.com to see how much you can install and go for the maximum. Get the RAM from a reliable source, such as macsales.com.