You can't. I know for certain that all versions of Bitcoin/Bitcoin-qt 0.7.2 and earlier will not be able to sync with the network due to an insufficient number of Berkeley DB locks which then essentially imposed a block size limit at around 500kB. This issue is what caused the March 2013 fork. Because of this, all versions of Bitcoin/bitcoin-qt 0.7.2 and earlier will be unable to fully sync the blockchain.