Need Login HELP!

I have been trying to login to my admin for the past few days to no avail. I even re-registered my user name, password, etc…I received all new password…when I go to login (from yahoo small business site which hosts my domain name) it says I have an invalid username…when I try to have a new password sent to my email, nothing happens…I am getting very, very aggrivated with wordpress…HELP…

-Keith