I have just restored a Mac Pro (2x2.66 Ghz Dual Core Xeon 16GB [only detects 8GB ugh!!!]) with OS X 10.5. I have done all updates, but it still wont support the installation of the latest browsers Firefox and Chrome, and with the older ones I can't fully access the modern websites. Any solution without buying a whole new OS? This one will only be used for the simple email/web/local docs etc.... Thanks!