Teched-08 - ABAP Cerification

Hi Friends,

I am registering for Teched-08 and planning to appear for SAP ABAP Certification.

I am having the course Materials TAW10 & TAW12.

I have couple of doubts regarding the Certification :

1> How is Teched Certification exam different from those after training(fresher)? As this is for experienced persons..will it be somehow tougher..? I am little afraid as i am not getting time after office hours for study of these materials..

2> Will TAW10 & TAW12 will be enough for preparation?

3> Can i have some sites where i can practice for simulation tests or get Certification questions to prepare?

Waiting for your reply...

Thanks,

SAM.