Right now I am upgrading my old computer, and I am about to order all the parts I need to get to upgrade my computer, but I opened up my computer and saw that there a lot of wires and pluggs in the inside connecting these different cards and stuff.. Do I need to upgrade these or buy some special cords that might not be in my computer because im getting new products compared to my old computer?

This is what im getting
http://www.amazon.com/exec/obidos/tg...X0DER&v=glance (Power) *prolly will go to 1000w
http://www.amazon.com/exec/obidos/tg...X0DER&v=glance (videocard)
http://www.amazon.com/exec/obidos/tg...X0DER&v=glance (2 of these)
http://www.amazon.com/EVGA-132-BL-E7.../ref=pd_cp_e_2 (motherboard)
http://www.amazon.com/exec/obidos/tg...X0DER&v=glance (processor)
V8 cooler
64bit xp pro