If you look at THIS set of install shots
h**p://www.xp-erience.org/nviewg4.htm
The setting to "Automatically enable nView when starting Windows" is optional, and it would appear to be reversible using the WIZARD button (see last shot on the page)
Looks like some features may be usable even in single monitor (transparency, and multiple desktops)
though transparancy in selected programs (eg. Trillian) is normally only possible in XP/2000
.... I'm about to "upgrade" to a Geforce MX2 - well, from a RAGE128, it IS an upgrade - and with a power consumption of <4w, it should keep my rather fussy m/b happy - tried a S3 Savage 2000 and it wouldn't post.