Alt+Tab is nice. It's the only alternative to the default alt-tab function in XP that still tempts me. I, too, after using a number of enhancers (Entbloess/Reflex Vision, Top Desk - demo only, Windows Powertoy, WindowsFX, and a number of other, now forgotten, freeware enhancers) prefer the lightweight approach. I still have Alt+tab installed and will give it another shake. What I find usually happens is that I am unable to see much benefit in return for the hit on my system resources (of which I am insanely jealous) and wind up uninstalling, or at least disabling.