First of all, thank you so much for replying.
Should I empty my database too?
Anyway, I uploaded my backup config file to my site, but it still don’t work.
I even tried installing WordPress via Fantastico installer.
I got a brand new MySQL database and the default theme came up and worked.
I deleted the files in my new MySQL database and inported it with the files I exported from my old MySQL.
And now it just give me a blank page?