Help please! Can I upgrade my ibook 10.2.8 OS X to a higher version? If so how? If not, better to get a new computer? I was trying to install a broadband modem but requires OS of 10.3 or higher. I'm not computer savvy but can understand enough to get by, as long as it's plain English. I want to be able to use my laptop to access the internet, anywhere & anytime. Thanks.