Permisson Problem on Collaboration Portal

[hdv212]

Hi

i have a collaboration portal which have subsites (include News). i add all users to Portal Members with following steps :

Site Collection > Modify All Site Settings > People and Groups > Add users to Portal Members Group

Now i want, some users from Portal Members Group, has full acccess to News site and can Create Page, in this mode, the user can not have access to create page in News site.

for solve this problem, i define a new group in Portal > Sites > SiteSettings > Permissons > New Group named 'NewsGroup' and assigned to it Full Control - Has full control permisson. Then, go to Portal > News > People and Groups and select NewsGroup from quick launch and add some users to it (these users also member of Portal Members Group).

now i think every thing is OK and when i log in to site through that user and go to News and select Site Action > Create Page the following error has still display :

Current User
You are currently signed in as: OFFICE\yar




can anybody help me to solve this Permisson Problem ?

Thanks