Casting Outlook Attachment object back into Outlook.MailItem

[lsman11]

I have a reference to an Outlook.Attachment object, 'a', and i would like to cast 'a' back into a Outlook.MailItem, but i am receiving cannotCast exceptions...

I know for a fact that the attachment is an email. Is there any way to cast the attachment object?

Any ideas appreciated, also pls let me know if there is a different forum inside tek-tips this is better suited for, thanks!

Luis