Know HTML and CSS, but not PHP....



the entire premise of the original 10-word post is flawed. "am i screwed?" what kind of asinine question is that? are you incapable of learning a 3rd language? just learn php.
 
True that, I apparently lost myself. Looking back at the responses in respect to the original question, it makes me giggle how seriously most of us took the question. Thanks for snapping me out of it.
 
Knowing scripting languages is great, but I think that if you really just want to make money with the fewest complications - hire people who know PHP who can do what you need quickly instead of slaving over code for hours. Concentrate on learning how to market first, and add coding as you go.

Also, plenty of PHP scripts are available for free, or nearly free. When I didn't know HTML I really was screwed, so anybody who doesn't know that had better go learn it!