How do I conduct an upgrade from Magento v1.4.1.1 to 1.7.0.2 ?
Hello !
I'm thinking of upgrading Magento v1.4.1.1 to v1.7.0.2 I have never conducted this kind of operation. I have read there are two ways of doing it. Using SSH or Magento Back-Office. I know I can't upgrade directly from v1.4.1.1 to v1.7.0.2. I might need to pass by v1.4.2.0, v1.5.1.0 and v1.6.2.0 I have read loads of forums articles. None of them explains the process the same way.
What way is the best to conduct this operation (SSH or by Back-Office) ? How to conduct this operation via SSH ? How to conduct this operation via Back-Office ? How do I specify the name of the new version I want to install, from magento Back-Office (and from SSH) ? How do customers and admin data bases get updated after core and skin files ?

Thank you very much for your help !