A very beginer question: error in creating table

I am new in T-SQL. I have just create a empty database and would like to create some table in it. So I type the following in SQL Query Analyzer:

CREATE TABLE mydatabasename.mytablename (

some code here
)
But when execute, it give me an error from the first line "Specified owner name 'mydatabasename' either does not exist or you do not have permission to use it."

when I remove mydatabasename it inserts the table in to the master database, not in my database.

How can I insert the table into my database? Should I use SQL Query Analyzer or use others program? I 've tried to use the command "create table" in enterprise manager but it immediately give another error, some what like "could not use empty column name ... "
Seem to be too simple question, but I am really appreciate your helpWhen you use the SQL Query Analyzer do you choose from the dropdown your newly created Database?|||CREATE TABLE mydatabasename.mytablename

should be

CREATE TABLE mydatabasename.dbo.mytablename

A fully qualified name is
servername.databasename.owner.object

You can't skip one like you're doing. You can omit them from left to right, but can't skip a part.|||Thanks all. I will try both, select the newly database and use databasename.dbo.tablename.

Infact, I use to think about using "databasename.dbo.tablename" but then think it 's ridiculous for a try. What a mistake. It's my because my poor English make me sometime not understand the full syntax.

Thank you.