Configuration of LDAP to MS AD Server

Hi all,

We are planning for Configuration of LDAP to MS AD Server. There are around 35000 portals users are there in portal database. Now we are planning to move to ADS which has the same ids as portal database.

My doubt is:-

1. Is there will be any conflict between ids(as there is same ids are there in

ADS & Portal database).

2. Before starting the configuration do I need to delete the portal database ids.

3.Is there any way disable the portal database and make the AD database avialable

Please help me in this

Regards

Ponnusamy