SAP XI Certification - Important Topics

hi,

I am planning to take the SAP XI certification. Wanted to know if somebody could help me narrow down important topics that should be prepared to clear the exam. Planning to get hold of the TBIT 40 - 44 courses for SAP XI. What would be the topics I need to focus from TBIT 40 - 44.

Your help is appreciated.

Thanks,

Manpreet