On which console in the games first week will it sell more on?

Wii, PS2, PS3, or the X-Box 360? 

360/PS2/Wii/PS3 is my prediction from best-selling to least.

id say

wii/360/ps2/ps3

I dont know Dolla, by the time GH3 hits, the Wii will have a larger audience than the 360, and GH and the wii have so many similarities, i can see it being a HUGE hit on the Wii.

I think PS2 and Wii will be fighting for top spot.

Either that or PS2/360/Wii/PS3.  I wouldn't be surprised either way.

PS2/360/Wii/PS3

Wii/PS2/360/PS3
or with PS2 first, and Wii second

one or the other

Activision execs have said on multiple occaisions that the Wii version will take advantage of the Wii control system. I don't know if the Wii version will sell better, but it's something to look forward too. I'd guess that the PS2 version will still sell best, but the Wii version could sell very well if what they say is true.

Well, Guitar Hero sells the best in NA. Currently, 360 has a 3 million lead over Wii in the US. I can see that lead dwindling to maybe 2 million when Guitar Hero III launches. With Halo 3 and GTAIV launching in September and October, the 360 should get a healthy boost in hardware sales so the lead in NA won't close as quickly as the worldwide lead.

As deadhorse pointed out, I think it'll be between PS2 and 360 for best selling on GH3. 

whats the release date for gh3?