Outlook 2007

Hi,

I have two problems with Outlook 2007 as follows:-

1. How can I make my tasks, rather than my "To-Do's" the default display when I click on the tasks button in Outlook 2007?  I've tried moving the tasks icon up the list over the to-do icon and that works and keeps working for the current session but then reverts to displaying the to-do's as the default next time I power up the machine.
2. In the Inbox view if I receive an email with a PDF attachment it displays the attachment at the top of the preview screen and when you right click on it it offers you the option of previewing the attachment rather than opening it up in a seperate application.  Is there a way to change the settings so that instead of offering the option to preview the attachment attachments are automatically previewd by default? 

Ben