300 px right sidebar….

Hi group !

Ok… I’ve got a new problem today ! :wink:

Would like to modify the width of the right sidebar of these different pages to be 300px :

http://dev.zocalox.com/activity/

http://dev.zocalox.com/members

http://dev.zocalox.com/groups/

http://dev.zocalox.com/events/

http://dev.zocalox.com/sample-page/

Any clue…. Any suggestion to begin with ???

Thanks !!!

Alex