Person Form

Dear All,

I'm trying to create entries in Dynamcis CRM for Person Form it's under person entity.

Here is the code i'm trying t use :

"CRM WCF"C#

Entity person = new Entity("?????");

person.Attributes["name"] = txtName.Text;

.

.

.

orgService.Create(account);

Know here are my questions:

What is the name I should put instead of "???" up there ?

What is the difference between form/entity? 

Where can I find the fields names for the form?

I appreciate the help.

Regards,