HiFbacchinZF,
Yes, Windows Server 2008 Standard Edition and Enterprise Edition are fully supported by the latest release 5.2.8 MP3.
The scspints.pdf is not updated with every release, therefore it is better to refer to the Matrix as suggested by Chuck.
However, there is a mistake on the current Matrix 3/15/2012 on page 13 in the OS column since it should be Windows 2008 (Standard Edition and Enterprise Edition) right under Windows 2008 R2 (Standard Edition and Enterprise Edition) instead of "Version 5.2 RU8 MP2".
The articles below might help you during the installation process:
How to install SCSP with Microsoft SQL Server 2008 R2 Express Edition
SCSP - Error "Database population FAILED"
Let us know if you have any questions, if not, mark the thread as solved ;)
Best regards,
Shulk.