DllImport and WebMethod and STAThread

> I'm trying to use a 3rd party DLL, which I have no control over, in my
> WebService (written in C#). However, every time my WebService tries to
> call one of the dllimport-ed methods it simply never returns from the
> call. I know the DLL is there and it works well in many console and
> windows applications I have done.
>
> I have been able to create a console application that fails in the
> same way, at least I think it does!?!? It fails if I take the
> [STAThread] from the main method. Then I get a message dialog saying
> "The operating system cannot load the DLL module. Please check that
> the DLL module exists, and that any other DLL modules that it will use
> also exist." The DLL is there and it works if I put the [STAThread]
> back on the main method.
>
> How do I make part of my WebService use the STAThread model instead of
> the multi-threaded model? I realize I don't want to do this all over,
> just partially?!?!
>
> I have seen some discussions about using dllimport and WebServices
> together but nothing that can help me. All your help is highly
> appreciated.
>
> Looking forward to hearing from you.
>
> Thanks.