I used to start mysql before from the command prompt using mysqld --console and all of a sudden it aint working now.when i try to start in such a way, it throws me the following message.

040322 InnoDB: Started
040322 Fatal error: Can't open privilege tables: Table 'mysql.host' doesnt exist
040322 Aborting
040322 InnoDB: Starting shutdown............
040322 InnoDB: Shutdown completed
040322 InnoDB: Shutdown Complete

How can I fix this problem??I'm running on windows NT and I dont have administrative privileges.

Thanks for your time