Outlook - Adding Contacts

[MyerK]

I have a program that reads an Access database and write email Contacts to Outlook.

Unfortunately there are about 9,000 names. This takes at least 30 minutes to write.

Since Outlook displays the names in alphabetical there must be some type on indexing taking place during writing the contacts. It appears to slow down as more contacts are added.

Is there some way to programatically remove or suspend indexing at the start and then replace it after writing is completed?

Thanks.