I have downloaded MYSQL without installer suppourt in my windows 64 bit machine . I have followed the guidelines mentioned in this website
http://dev.mysql.com/doc/refman/5.0/en/windows-install-archive.html
i have installed it inside c: mysql directory .
As first step i navigated to c:\mysql\bin>mysqld , as shown in picture below . This started the Database

Then i opened another command Prompt Window and navigated to c:\mysql\bin> and typed show databases;
With this it it showing an Error in Command Prompt saying

mysqlbefore you may type mysql commands. – dystroy Jun 15 '12 at 15:13mysqlcommand before executing any queries. Second, I believe this question is better suited for SuperUser or ServerFault. – mingos Jun 15 '12 at 15:13