Business Portal Requisition Management

Hi all,

how would the business portal for GP2010/Sharepoint 2010 integrate requisitions with projects ?

i see from the documentation that after the approval portion, the purchase order can be created or modified with the req lines..so how does this go to projects?  after the po is created and assigned to a project number?

reason im asking, is while i am researching how to use the business portal for this, i am also looking at a 3rd party for this functionality, and they said business portal has no integration with projects.

thanks!