I've created a Webform. Whats next?
He Hui,

Currently the webform module does not provide integration of its submissions data with the views module.  You can see the status of this issue here: http://drupal.org/node/680386.  There is plenty of interest and work on the issue, but it is not functionality that currently exists.  By default, the only fields views will let you get to for the submissions are the sid, date created and a few others, but you can't get to the actual fields.

You can actually use additional modules to get to your webform submissions data in a round-about way, and there is lots of information online from folks who have made it work.  For Drupal 7, here is a sample post with instructions: http://drupal.org/node/1658784.  As you can see, you'll need three additional modules to get that functionality!

Hope this helps.