Threadpool and Callbacks

Hi

could someone please point me to some simple code on threadpools and callbacks. The more I read on a google search, the more confused I get. I am a moderate level programmer at best, so easily confused unless it is kept simple.

I want to go off and get some external data, using a callback when the data comes back, multiple calls for different data simultaneously. Therefore, I believe what I need to use is a threadpool call with a callback that tells me when the request is responded to, such that I can then run a process to process the data being returned from the request, and such that the processor moves on whilst waiting for the response to come back.

I would appreciate it if I could be pointed to some simple code that creates a threadpool request to a method, passes parameters to the method, and allows processing of the resulting data that comes back.

I can't seem to find a simple code example to achieve same. I am doing this in another application with the backgroundworker, but believe I need to move to a threadppol here as there will be multiple requests happening simultaneously with differing response and process times. My application is a simple c# wondows application, although I am looking to do tihs with a c# console application to maximise speed.

Any advice would be appreciated

Ian