Is there any libraries for this?

I will put this on a server and it will be a windows service.

And Skype will not be installed on server. So Skype API will not mean anything I guess.

Edit:

I am sorry for not being clear. Here is what i need:

I just need a Skype client which will act like a small bot. A person who uses Skype will ask it something like:

print totalCreditsLoadedToday

And it will answer:

567867867 credits.

I need to write a windows service which will accept text messages from Skype and will send responses as text message (a very simple Skype client). I don't need voip support but Skype is a, errr customer requirement lets say. (And yes I suggested Google Talk but not accepted)

But i need to achieve this without installing Skype to the server.