I'm a newbie still so I could be completely off here but... Did you enter the correct address, user, and password information to connect to the database? To me it seems like it's saying that you are trying to connect to a local mysql database without a password which I don't think is very common (dont hold me to that tho - like I said - newbie here hehe)... I'm assuming you set up a database with your host (it's where I set mine up with anyways)?
I don't know, php/mysql can be so confusing... I'm sure someone smarter will be along to give yu some real help *blush* I tried to figure it out tho hehe
Hope this is fixed for you soon! Good Luck! Always -Bree