User Account Control - How to runa program as a service as administrator

Not exactly sure how to phrase my question... We use a remote support tool

that is designed to run as a service. Under XP, we can log off of Windows

and back on, and the support tool is still active. Under XP, we can re-boot

the computer, and when it comes back up, the remote support tool is loaded,

running as a service, and we can re-connect.

However, with Vista we cannot do this. When we're connected remotely, if we

log off, that's it. We can't re-connect until somebody at the host end logs

in.

We've disabled User Account Control, but this has not helped. I'm no expert

at User Account Control, but it seems as if disabling it would help while

one is logged in, to prevent frequent prompting for permissions to run an

application. However, I can't find any guidance as to how to enable this

remote support tool to run, and load, as a service on Vista... without the

host user logging in.

We've contacted the authors of the program, and either they don't know, or

feel obliged not to divulge a security loophole. Any ideas?