In windows XP, 17 seconds from the time it actually starts loading up windows, discarding bios init crap.
In windows 98se, 15 seconds from when it starts loading windows.
Bootvis did nothing for me. My machines boot up really fast, despite the large number of programs that I have on my system. The key is to have no or little programs loading up at startup. Also assigning and IP to your LAN NIC will speed things up considerably.