Smart Document from C#

[Locusta]

Hi,

I would like to use Word to make templates, e.g. an customer invoice,
and I would like to be able to create a new invoice eg.
Invoice43243.doc from C#, where I will one way or another create the
Invoice43243.doc based on the template and an XML document.

I use in my C# program business objects, that I would serialise and
give to the document engine through a webserice.

Any (paid) help to get started is greatly appriciated.

Cheers,
Locusta