Consuming a webservice from a custom control extender

I am making a first attempt at writing own extender using the toolkit, and I need to consume a web service. When I Google on Ajax and webservice, I get a lot of articles, but they all seem to involve modifying the ScriptManager tag to point to the web service I want, and you can't rely on that from an extender paradigm. I know the autocomplete control uses some sort of web service, but picking the code out is tough. Is there a plain vanilla, Hello World type of example of how to consume a web service from a custom control extender?

There seems to be a couple of ways to do this, check this post:

http://forums.asp.net/t/1163304.aspx

Although I like mine better

Hope this helps,

Elias.

Thanks Elias, that's what I was looking for.