KM development APIs not found

Hello all,

I use an EP 7.0.6.0 version. I gotto rush up with some custom development in portal. I was searching for these APIs (com.sapportal.wcm.service.*) in available jar files, but was not able to find it. So my question is,

1. Are these APIs out in SDN or market place that we have to download and use?

2. In my sneak preview for portal, I dont find the KM working. Though it is a full JAVA edition, the KM content iviews give an exception of runtime type. So is KM not available for the sneak preview?

3. Then obviuosly I cant test my KM custom code with sneak preview then, before actually testing with actual data?

Thank you very much well in advance