Unix emails in Windows

Hello,

How can I convert Unix emails w/attachments to a Outlook PST file?

You can mail (or bounce) them to an Outlook account, filter them into a single Outlook folder, and export the folder as a PST file.

What if I can't mail it from a Unix machine? I have a big file including lots of unix emails and attachements.

Are these emails in mbox files?
If yes --

has this to say:

"Outlook can import MBox files using the Import/Export wizard."

Also try

http://www.google.ie/search?hl=en&q="mbox\+to\+pst"&btnG=Search&meta=

Google is your friend.