1. Go to http://twitter.com/oauth_clients
2. Login or create account if you don't have one
3. Click "Register a new application" link
4. Fill in the form
4.1 Upload application icon
4.2 Fill in - application name, description, Application Website (e.g. http://www.mydatingsite.com), Organization, Website
4.3 Callback URL - http://www.mydatingsite.com/TwitterCallback.ashx
4.4 Default Access type: Read&Write
5. Find the twitter settings tags in your web.config and place your application's Consumer key and Consumer secret between the <value></value> tags as showed below
<setting name="TwitterConsumerKey" serializeAs="String">
<value>Place your consumer key here</value>
</setting>
<setting name="TwitterConsumerSecret" serializeAs="String">
<value>Place you consumer secret here</value>
</setting>