I believe I have solved all the issues of getting the right information to send a tweet using Excel. Calculation of oauth_nonce and oauth_timestamp look good and also the calculation of the oath_signature seems to be in order.
When I try to post the message I get a message asking for user name and password and when I cancel this I get an error 32. I am doing the following: Set xml = CreateObject("MSXML2.XMLHTTP") xml.Open "POST", http://api.twitter.com/1/statuses/update.xml?status=text of the update, False xml.setRequestHeader "OAuth", headerstring xml.Send tResult = xml.responsetext Debug.Print tResult Set xml = Nothing headerstring="oauth_consumer_key=myconsumerkey, oauth_token=mytoken, oauth_signature_method =HMAC-SHA1, oauth_signature=calculatedsignature, oauth_timestamp=1285014608, oauth_nonce=81A1iuux8jzxgieaxmmp3ta2bDdqefd88hp9soo31, oauth_version=1.0" Any help wouldbe appreciated because I am really stuck. -- Twitter developer documentation and resources: http://dev.twitter.com/doc API updates via Twitter: http://twitter.com/twitterapi Issues/Enhancements Tracker: http://code.google.com/p/twitter-api/issues/list Change your membership to this group: http://groups.google.com/group/twitter-development-talk?hl=en