Whether you are implementing a service or some other kind of
application, for simple background processing of a task on a different
thread, the BackgroundWorker class is often an excellent choice.

As far as examples and links go, you should be familiar with both
Microsoft's MSDN web site, and Google Groups:

http://msdn.microsoft.com/
http://groups.google.com/

The former has complete documentation of the .NET Framework (among other
things), where you can find the details on the definition and use of the
BackgroundWorker class, including code examples.

The latter is useful for looking up answers that have already been
provided in this and other newsgroups on the same topic.  There are a
number of examples of using the BackgroundWorker class in this
newsgroup, the microsoft.public.dotnet.languages.csharp newsgroup, and
others.

You should be able to easily implement your solution using the above
information.  Once you have read the provided references and made an
attempt to do so on your own, if you have specific questions please feel
free to post them here for additional help.  There are already too many
basic examples of using the BackgroundWorker class available for there
to be any point in duplicating that effort here right now.

Pete