proxy problem

hi,

i'm trying to send data from sap to thirdparty.I am using proxys.I've created proxy in sproxy transaction.In that it wont shows Excute_Asyncronus.It shows only if_proxy_client~execute.I've imported this method in program it asks two parametrs methodname from exporting and parmbind_tab from changing.which parametrs i can pass.I'm new to proxys.I'm using ECC6.0.Pls help me.sds