Outlook 2003 Attachment Help

[Rad]

Hi,

1) How do I unblock attchments in outlook 2003? I think
its aregistry setting somewhere. I would like to add a
few file formats to the list of safe files.

2) I have a lot of folders and subfolders where I
organise my email in outlook. I would like to stop
outlook opening these folders every time I have a new
message in them? Any ideas would help.

Thanks

Rad