welll i re-did all the uploading and know I've come across a new prob. I get a 500 error thing. it says:

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, webmaster and inform them of the time the error occurred, and anything you might
have done that may have caused the error.

More information about this error may be available in the server error log.

How do I check this error log thing. And what file and directorys have to be 777 and what has to be 755? I want to make sure I have it correct. And what do I not touch?