New Mavericks install
I have just erased my HD due to a problem and downloaded a new Mavericks OS X download from the Apple store.
It installed OK(I think) but I cannot find iPhoto or Ilife to download my backed up photo's can any one advise please.
You need to restore the iPhoto application from the backup of the hard drive that was made just prior to the erase and install of Mavericks.
Otherwise you'll need to reinstall it from the original source: the disks that came with the Mac, an iLife disk or the App Store.