How to show Microsoft Word interface embeded inside C#.net windows Forms?

Question

Question: [How to show Microsoft Word interface embeded inside C#.net windows Forms?]
I want to develop a windows application in c#.net in which i want to get the microsoft word features inside the application..i had referred lots of sites but all are saying about how to open the doc or txt file ..or how to open a microsoft word as another seperate application. But my requirement is that i want the microsoft word window must open inside my application..not outside...if anybody knows about this please do help me...i need it very urgently....