Calling BSP Application from Business Object?

Hi,

Can any one tried to call BSP Application from Business Object for showing in the Portal.

I have the following Scenario:

1. BSP Page: User will input the Date and Submit to store in the Database. and in this page the Workflow will be truggered and a Work item will be sent to the Next Level User.

2. When he executes the Work Item it has to trigger the BSP Application and has to show in the Enterprise Portal.

All this has to happen in the Enterprise Portal.

If any one knows how to triggere from business object, please let me know.

Thanks & Regards

Sumanth