can't able to edit my account!

[mahendersingh]

i'm not been able to edit my account details. it says you don't have permission.what to do? i want to change avtar and my location.admin, please help.

 

[Sushubh]

20 posts.

 

[dextermorgan]

so i have to post 20 posts to be able to change my details? why so