AS2: Web Services

I am totally new to web services but trying to to get to grips with them quickly in flash. I have created the code to hook up to my web service but I need to send off some params of basically: UserId, EventName, Score, Date, Passing Score.

Do I do this basically like so:

wsConn.params = [“5”, “game1”, “100”, “11/12/2009”, “1”];

Would this write it to the web service (created in XML) or do I have to do something else like put the parameter name then what it equals???

I am really stuck on this and there isn’t too much about it on the net that is relevant I have found.