Adding new page template in default theme.

Hi,

I am using defult theme for my web site. I’ve created new page templates and uploaded it.

But when i tried to add new page by selecting new template these new templates are not appearing in templates drop down.

Also how to get rid of “Hello world …. ” post. Since i am using wordpress for website but not blog I want to use pages but not posts.

Please help, i am new to wordpress.

Regards