I accidently added 600,000 or more blank contacts to Outlook when I
imported an excel spreadsheet that had about 100 names and addresses,
into Outlook but I forgot to set a range. So I think I imported an
enormous spreadsheetand and so created all these blank contacts. I
have tried to delete these contacts as a group but with no success. I
can delete them one at a time but I should live so long. I use Outlook
2000.

Hello dobber1234-ga,

It is actually not too difficult to delete multiple contacts at once.
Here is what you need to do:

1. Open Outlook 2000
2. Select the Contacts folder
3. Change the view of the contact list by selecting View --> Phone
List. You should now have what looks like a spreadsheet of contact
information in your contact list.
4. Click the "Full Name" column header to sort the contacts by name.
What this will do is group all of the empty contacts (which have no
name at all).
5. Select the first empty contact you see from the top of the list,
then scroll down using the scroll bar on the right so that the last
empty contact is visible.
6. Hold down the SHIFT key and select the last empty contact. What
this should do is select all of the empty contacts.
7. Hit the DELETE key; this will delete all of the contacts that have
been selected as a group.

Please post a clarification if any of the information above is unclear.

I hope this resolves the problem of the phantom contacts :)

Cheers,
answerguru-ga