Add a node as a select list in Webforms Drupal 6?
If you are using D6 then consider the Webform View Reference Component module. Here is a quote about it (from the module's project page):


  ... adds a webform component where you could use a View as a datasource for your normal webform select component. Instead of hardcoding all the selectable values in the component values field you just select a reference to a View similar to the CCK nodereference. The selectlist/radiobuttons/checkbox then automatically gets filled with all the nodes from the View.