[jriera]

I agree with nostatic.. Linux+Apache or Linux+TUX is the way to go if you want a hands-off/lights-out operations..

I have been running Windows and many flavors of Unix in commercial/hosted applications for a long while and we even had to schedule weekly 'downtimes' to reboot the Windows machines to clear memory and caches, never on Unix..

As nostatic says, IIS is not bad, but requieres more attention.