hi,
I am not sure this is going to solve the issue as i am not familiar with Business Scorecard Accelerator, but i can comment on integration of reporting services to other applications.
To call a report from another web app usually you have two methods
1)You can use the
http://ReportServer url(not the
http://reports url which leads to reports manager) with paramerters in query string
2)You can consume the it as web service and render it to your page
Prashant