The zapper will surely help Zelda:TP... Kinda obvious and i guess Nintendo bundled the Zelda shooter thing with the zapper with that in mind.
I guess they want to get Zelda:TP on the Wii above the 5 mil or something.
Wii + GC sales (Zelda:TP) are about 5.5 mil a.t.m i guess...
THE NETHERLANDS