401 error when trying to POST, no problems with GET

[ekomategroup]

I have registered my application with twitter successfully.

I am able to get the user details by passing the validated access_token and access_token_secret with the application consumer_key and consumer_secret. I have no problems in executing “GET” methods through web requests.

I face a problem in “POST” methods. I tried to post the message from my registered application to the allowed users timelines. I use “http://twitter.com/statuses/update.xml” this method to post the message and I get the error as “401 - Unauthorized”.

My application has the permissions of Read, Write and Direct Message.

I need your inputs to post the messages to my wall and to the members allowed my application to post the message on their walls also.

Thanks in Advance

[niall]