BPM Process Monitoring

Dear All,

We have implemented a BPM process in NWCE 7.2 SP03 for KM document approval. In order to monitor this BPM process we tried to use Process List Viewer http://help.sap.com/saphelp_nwce72/helpdata/en/4a/ee9c8588946d62e10000000a42189c/frameset.htm which provided by SAP as standard function. But we want to the link which an attribute in process to KM document shown in the process list either. Is it possible to customize the Process List Viewer only for this BPM process? Which Service or API is used by SAP to get BPM Process to monitor? May we use this Service or API to implement own Process List / Process Instance Monitoring?

Thanks in advance & Regards

Yao