Hello Anne,
I believe you can import Excel files into Outlook as well as CSV files.
Project will export to either file type.
You can do a manual export/import from Project without Project Server. The
"Outlook Add-in" you have most likely seen referenced works with Project
Server. If you have Project Server installed and have questions about the
add-in try posting to the Server newsgroup.
The tiny url below is a link to a posting available on google groups
detailing steps to export and import the information from Project to outlook.
It also contains some code (not written by me or tested) that may help.
http://tinyurl.com/6psv7l
I hope this helps.
Julie