Display a dialog allowing the user to subscribe to an RSS feed.
DTKN_RSS_SUBSCRIBE_DLG or 148
VOID RSSSubscribeDlg( [WIDESTRING] RSSURL; [WIDESTRING] FolderName; [WIDESTRING] Description)
(Optional) The URL of the RSS feed to subscribe to.
(Optional) The name of the folder that will be created in GroupWise.
(Optional) The description of the folder.