Install Active reports 6

Hi,

1. I have Active reports 8 installed in my pc which also has visual studio 2010.
Due to client requirement I need to install Active report 6 . Can I have both version in my pc or I have to uninstall activer report 8 to install version 6. Is there any issue if i have both version in same pc.

2. Do I need to add any addins to configure Active report 6 with visual studio 2010

Thanks
Raja