Though nobody suggested it (probably because a lot of regulars might not know it exists) we also have a dedicated Wordpress site on the Stack Exchange network.

The type of question you're asking ("Is there a way to make Wordpress do X?") is probably better suited to that site.
After following their advice if it doesn't work and you've got a bunch of errors in your AD server's event log Server Fault is the place to bring the follow-up ("I've got Wordpress talking to AD using X, but I'm getting error Y -- How can I make AD play nice?")

(This is "Good Fragmentation" -- Wordpress experts can point you at the most likely plugins to work for you, and Windows/AD experts can help you if they don't :-)

Though nobody suggested it (probably because a lot of regulars might not know it exists) we also have a dedicated Wordpress site on the Stack Exchange network.

The type of question you're asking ("Is there a way to make Wordpress do X?") is probably better suited to that site.
After following their advice if it doesn't work and you've got a bunch of errors in your AD server's event log Server Fault is the place to bring the follow-up ("I've got Wordpress talking to AD using X, but I'm getting error Y -- How can I make AD play nice?")

(This is "Good Fragmentation" -- Wordpress experts can point you at the most likely plugins to work for you, and Windows/AD experts can help you if they don't :-)