my mac is an 10.5 and i want the the new version of apps, its the old mac 2007 one
You need to upgrade to Mac OS X 10.6 and then run Software Update twice.
What model Mac do you have? What iDevices do you want to sync?
The current max version of iTunes is 11.x and as a minimum requires OS X 10.6.
For some older iDevices you can use iTunes 10.6.3 and OS X 10.5.
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