Ok, so my checklist so far goes something like:
6* 125mm Robo Challenge blue wheels
2*Graupner Speed 900s
2*http://cgi.ebay.co.uk/12V-3700mAh-Ni...item3353ee4e1a
1* Transmitter and Reciever (Not sure where to go yet or what I really ought to buy)
1 * skorpion xl + cooling fan? or does that go the same way as the graupners that they will cool themselves?
1*Resistor and LED
1* safety removable link
2*1:50 gears for graupner motor, where should I look?

Not going to look at pulleys until I've worked out how big this bots going to be, that goes for armour etc as well!

Please mention anything I haven't said or should change to something more fitting. Thanks guys!

Off topic - Jamie, what CAD did you use to design drumroll, and the robots in your misc album in photobucket, and how much did it cost?