I'm thankful some new guys are expressing interest.
@ spurgeonryan. You can basically enter your prediction as shown in the tables in the second post of the OP, predicting for each of the ten weeks, anticipating hardware trends, software, etc. I added some dummy figures, but I have taken these from the 2009 and 2010 sales and the average between them (note 3DS are the DS numbers). I do hope for someone to start to get the rest going :). You can still change your numbers up until the deadline of 30 October as often as you want.
@ Seece. Thanks for giving me the idea to save the tables as pictures in photobucket. Makes them easier to update without risking to screw up the whole post. Give me a reason to update them and I'll think about changing the font .
@ Machina. Deadline is 30 October 2011, which is the end of the first week you need to predict. I'm still thinking on the specific time(zone). I think Midnight Pacific may be best, though I'm on Euro time.