>I got it to work! Thanks a million for your help.
>
>This is how it's declared now:
>
>

> [DllImport(@"C:\Program Files (x86)\Siriusware\Pool\ww_local.dll",
>            ExactSpelling = false,
>            CallingConvention = CallingConvention.Cdecl,
>            CharSet = CharSet.Ansi)]
>        static extern IntPtr Invoke1( String str);
>

>
>And this is how I call it:
>

>  translate = Marshal.PtrToStringAnsi(Invoke1(invoke));

Good.

That how a string is returned
The dll returns a pointer to a string, hence IntPtr in the declaration
Once it returns, you create a string with PtrToStringAnsi