It's possible to run Tcl scripts as services under Microsoft Windows NT. Matt Newman has done a nice job of producing a wrapper, tclsvc that lets any event-driven Tcl script run as a service. Get it from
http://www.sensus.org/tcl/index.htm
or
http://mkextensions.sf.net/
I find the latter to be a somewhat nicer distribution. I'm working on beefing up the documentation but I'm not sure where to put it. Give me a hollar if you want a copy of my draft. -- Chris Nelson
Firedaemon [L1 ] is an alternative.
Winserv is another alternative.