how to access ssrs report on network without any credentials

Question

hello friends ...

 i m using sql server 2008 on windows server 2008 r2. i have deployed my ssrs project on this server. but when i access the report on report i am promted to provide server credentials to access report. it is also prompted me to provide credentials when i access report on server itself. i don't any user to know server credentials. how do i configure ssrs to allow accesss to reports by any user on network without providing server credentials. please help