A. The NT Resource Kit includes a utility called SRVANY.EXE which runs an applications as a service. There is more information on this at http://support.microsoft.com/support/kb/articles/q137/8/90.asp, also read the file that comes with the resource kit (Start - Resource Kit - Configuration - Running an application as a service).

There are also 3rd party products available with more advanced options such as Service-It (or Service Mill) from http://www.activeplus.com/us/products/serviceit.html.