I\'m currently a PHP programmer and one of my childhood dreams is to create a game.
The problem is I don\'t know Flash. I\'m not great at drawing stuff or even artistic.
Flash is a poor programming interface, it is only really good to create your animations, which you can export to a compiled SWC. So, do your programming in another tool, like Flashbuilder (go pure AS projects, not Flex).
You'll want to use a library, I haven't used any engines for platformer-games like indiana jones. So I can't tell which are any good.