Small Question for programing vB product

[ArAb4NoKiA]

Hi Everybody,

I'm programing a vB product and i went to point i don't know how to do it (I'm a beginner in programing)

what a want is :
if a member posting a new thread and it's including the hide tag

[hide]

he get a error :
You are not authorized to post a hide content in the thread

except some members i define them with the member id

how can i do that ?

Second question :
i want all old thread's that content the hide tag and the thread owner is not authorized to post hide content i want the thread to remove the hide tag Or hide it

That's all

And thanks

Regards,