Searching a tool for Win Administration

Hi Folks!

I’m searching for a really good and powerful Tool to administrate a Windows-Environment. It should combine as many as possible tasks from NT, Exchange and Database (SQL, Oracle) administration as possible. In addition it would be good if it could handle some other programs or additional tasks.
Either NT4 or W2K is fine, both OS are in the environment.
(btw: Does W2K Active Directories this in the way it is pronounced???)

Who knows a good tool to administrate a complex environment?
Thanks a lot!