mysql installation errors

[Nivedita Chamarthy]

Hey I am a newbie to mysql and ruby on rails frame work. I have installed mysql 5.1.47. it worked properly. But when I wanted to use it in rails frame work, by running rails command rake db:migrate,after setting up the database, I am not able to execute it. The error I got was
rake aborted!
Access denied for user 'root'@'localhost' (using password : NO)

But I had set the password while installing and accessed mysql database without connecting to rails.

And also, after running the rails command "rake db:migrate", I am not able to access even the mysql database alone. When i attempted to run mysql from command prompt, I was not able to get access. The error I got was
ERROR 1045 (28000) : Access denied for user 'ODBC'@'localhost' (using password : NO)
I tried starting mysql with mysql -u root -p
then I got the prompt to enter password
after entering the password, i got the error
"Access denied for user 'ODBC'@'localhost' (using password : Yes)"


I dont know y this error is coming still, after the password is been set.
Please help me out. I am so confused and no idea of fixing this error. And moreover I have to rush in getting rails frame work with mysql installed, as my project due is coming soon.
Any help is appreciated.


Thanks in Advance !!