Finding a DirectoryEntry from NTAccount   

Hi,

I have the Domain\user value and I want to this user in the AD.
Is there a way to do it?
I tried by NTAccount -> Translating to SecurityIdentifier which gives me the 
SID, but I couldn't find a way to search AD according to SID.

I will appreciate any ideas/solutions.

Thanks

date: Tue, 27 Sep 2005 02:24:02 -0700   author:   EyalS