Enable support for 32-bit applications directly on the relevant IIS7 application pool.
Installing SharePoint Services 3 on Server 2008
Prepare Server 2008 before installing Microsoft SharePoint Services 3
Installing WSUS 3 on an RODC
If you try to install WSUS on an RODC, installation ends in an error. The RODC lacks a writable AD database, preventing creation of the groups needed first by the WSUS internal SQL database and then by WSUS itself.
Configuring an external time source for Network Time Protocol (NTP)
Each domain structure has one AD server holding the relevant FSMO role, specifically the (PDC) emulator, responsible for time synchronisation throughout AD. The AD server holding the (PDC) emulatorrole is at the top of the DC hierarchy and cannot synchronise time with itself. Its default source is time.windows.com. Unfortunately, this source is often unavailable due to overload, so I recommend another source, such as tik.cesnet.cz
Removing OU accidental-deletion protection (Protect container from accidental deletion)
When creating, moving or deleting Active Directory objects, you may find that the system prevents deleting an organisational unit (OU).
Windows Server – extending the trial period to 240 days
Any Windows Server 2008 edition can be installed without activation and used for testing for 60 days. This period can be restarted three times, extending the initial 60-day trial by up to 180 days, for a total of 240 days.
Windows Server 2008 and RODC Read Only Domain Controller
Windows Server 2008 and RODC Read Only Domain Controller or a read-only domain controller.