making article public

I can't seem to figure out how to get my articles to be viewed by all viewers. I don't want people to have to register to see my site. Does anyone know how to set permissions as to who can view what articles? Maybe i missed something. But appreciate the help. : Vivvo CMS v4.0.3
by the way in Administration ->Categories. After you choose the particular category, you have to set the value for 'Access mask' option to 'All'. its all its not work still ask my vistors to register
please help me waiting ur reply guys

ohhh guys help me 19 viewers without any comments:S

[shketuljko]

Do you use any bridge (plug-in for vivvo) like VB bridge or phpBB birdge ... ?

no bro i used the banner manager only from my plugs no vb no php please tell me how i can fix it