Installing spamd as a Windows service?

[Jerry M]

 I can't seem to find any documentation on how to install spamd as a 
Windows service.  I found something about getting something called 
NTRunner.  But that appears to be obsolete.  The link is dead.  I've 
just got spamd running in a command line window. But I need it to be a 
service.

I looked through the FAQs and recent discussions on the forum archives 
and didn't see any info on it.

Is there some straightforward way that I've overlooked to install it as 
a service?

Thx.