Active Directory and Auto Updating from Application

Hi,

Sorry if this has already been answered elsewhere, I did search but did not find an answer ...

I am required to write some client side code that will automatically update our Active Directory with updated client information (including deletions). Our client environment is Lotus Notes, so VB Script would do the trick (more or less). . .

Has anyone done this?

A few pointers would be appreciated, I have never worked with AD before.
Are there available API's. Our clients are all Windows XP Prof.

Thanks in anticipation.

Wee!

Ok, I'm a wally.

I have found examples galore in this discussion site and others out in cyberspace...

But, I cannot find an example of how to check for an existing contact in AD (that is not a user) without having to loop through the entire collection in the OU.

Anyone able to assist?

Cheers
Wee!