I has a self-written plug-in for UBCD4WIN, running On-Demand Scan interface of VirusScan 8.5i and able to receive updates from internet.
If it’s actual for you, I can upload it to some file sharing host.
Yeah something like this needs to be *officially* released and supported by McAfee. None of this half-baked nonsense of releasing a Rescue-CD, and then deciding a couple of years later they didn't want to support it, or the other "not always suitable" idea of running a scan initiated by EPO during the boot-up phase. (also discontinued I believe).
There are plenty of options available to do what you're thinking of, but none that are supported by McAfee.There is also one floating around this forum - http://community.mcafee.com/thread/6923 , and also you could consider looking into Bart PE as many others have done the same thing with that.