SharePoint 2007 with integrated instance of Reporting Services 2008

Question

Hi there,

I currently have a 3 server farm coniststing of:

1x WFE

1x WFE (report server)

1x SQL Server

We currently have a working sharepoint integrated instance of reporting services 2008 R2 on our server farm. I have created another native instance and was wondering if I can use this in my SharePoint environment as well? I tried installing the 2 webparts (i.e. report explorer and report viewer) that uses the native instance but the webparts do not show in the webpart gallery despite the RSwebparts.cab unpacks successfully. All I have is the report viewer web part that works with integrated mode.

Just wondering if it's not there because there is already an integrated instance....

Thanks in advance,

Angela