auth iframe facebook application asp.net

Question

hey

i am working on this 2 days in a row.

i just want to auth user in iframe facebook application in asp.net

i try developer toolkit 2.1, and 3.1 both arent good. and mybe i success doing auth with them but later there were lots of problem,

so i determine not to use 3rd party framework. i want to do the authorization by myself.

i use this link http://www.facebook.com/login.php?api_key=yourapikey&v=1.0&v=1.0

then after the user allow, i should get from him the cookie with the session key, isnt it ?

but somehow it dosent work that good,

is there manual that implement iframe facebook application .net and that isnt using framework for it.

thank you very much,