Are you saying win ME can use the boot time scan?
No, Windows 9x and Millenium cannot use this feature.
This is a feature restricted to NT based OS, i.e., Windows 2000 and XP
But programs like spybot, ad-ware and AVG can scan on boot up on my win98 SE, are these different types of boot up scans or am i missing something here?.
Well, this is a very good question to the programmers...
I think it's not a real 'boot time' but after boot, the program 'freezes' the other startups and run. It will be the same as closing 'all' programs and running it. But, like I said, I'm not sure and could be completely wrong on this guess.