Microsoft get the facts campain:
At micrsoft.com There is a German text about
"Der Papierhersteller Koehler AG" (Produces paper) who migrated to windows (64bit) and Sap/R3 the microsoft .
The text ( here) suggest they choosen for microsoft instead of linux. because only microsoft can garantuee security and investement guarantee for scalability.
But in the article here at computer worche the CFO of the company sais that when they had Unix knowledge in house that is wasn't usefull to go with windows strategy.