Installing SQL Server on a Domain Controller is not recommended, but can be done. But, Installing SQL Server on a Windows Server 2008/2008 R2 Read-Only Domain Controller (RODC) is not supported, and not possible at all.

It is fully documented in SQL Server 2008 Books Online (BOL):
Installing SQL Server on a Domain Controller (at the bottom of the page)
http://msdn.microsoft.com/en-us/library/ms143506.aspx

“SQL Server Setup cannot create security groups or provision SQL Server service accounts on a read-only domain controller. In this scenario, Setup will fail”

And for SQL Server 2005: in the following Knowledge Base article:
http://support.microsoft.com/kb/936302 (Problem 4)

If you try, you will get a similar message: “Failure creating local group…”

The MUI package for Microsoft Office Communicator 2007 R2 is available as a free download and supports 38 languages. The installation is language-independent, so you do not need to first install the English version as a base, before you can install a MUI pack.

After installation, the user can change the language on demand (Tools—> Options –> General).

http://blogs.technet.com/chitpro-de/archive/2009/03/30/multilingual-user-interface-package-f-r-microsoft-office-communicator-2007-r2.aspx

For Microsoft Partners, our CPLS Partner AddOn, is offering between March and June 2009 diverse Ignite Trainings (Level 300), covering Unified Communications.

Learn about the possibilities that OCS und Unified Messaging can present, from Planning to Installation and Maintenance. A bootcamp, that will prepare you for the Microsoft Test 70-638 will also be held. It is recommended you first attend the OCS 2007 R2 Ignite training, and then the UC Voice Ignite training.

Training will be in German.

The dates and information to the events:

OCS 2007 R2 Ignite (2 Days)
23 March 2009
25 May 2009
  
UC Voice Ignite (3 Days)
25 March 2009
27 May 2009
  
UC Competency Kit – Bootcamp (2 Days)
23 April 2009
8 June 2009

http://blogs.technet.com/chitpro-de/archive/2009/02/26/endlich-unified-communications-ignite-trainings-wieder-in-der-schweiz.aspx

If you are based in Switzerland, you can order the Exchange 2007 Architecture Poster. Like they say….A picture is worth a thousand words.

http://www.ms-infoservice.ch/business

Based on many requests, a Microsoft Partner training event will be presented by the Microsoft CPLS Partner AddOn. The training will focus on Business Process Management and Process Optimization in BizTalk, plus how SharePoint Components can be used to simplify the solution.

For information on the Partner training in German, see the follwoing links:

BizTalk Training 27 April 2009
BizTalk Training 15 June 2009

http://blogs.technet.com/chitpro-de/archive/2009/02/27/biz-talk-und-sharepoint-server-gesch-ftsprozessmanagement-und-optimierung-mit-der-microsoft-plattform.aspx