I have create database name and userid and password and now i want to create tables on sql server through enterprise manager. I have problem to connect registration.

Check the instructional videos on this site:

http://msdn.microsoft.com/vstudio/express/sql/learning/default.aspx#1

Unless you do not post your exact error you get here, we wont be able to help you, if you are new to SQL Server and need rampup assitance you should stick to the link Arnie posted above.

Jens K. Suessmeyer.

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Refer this step for registration http://technet.microsoft.com/en-us/library/aa198220(v=sql.80).aspx