Sorry that this has taken so long...I know a lot of people have been asking for this.
In the Design tab when creating a form you can now select text and convert it into a hyperlink. Respondents filling out a form can click on those links and be taken to the specified website or mailto address.
Steps to create a hyperlink:
You should ask that question in the LiveCycle Designer forum: http://forums.adobe.com/community/livecycle/livecycle_es/livecycle_des igner_es