This should provide some assistance as well
*www.zytrax.com/tech/layer_1/cables/tech_lan.htm (Lan Wiring Structures)
www.zytrax.com/tech/layer_1/cables/cables_faq.htm (For Cabling Differences)
The major differences are their transmission speeds for Data transfer
Edit: Ok some more info turned up *discountcablesusa.com/ethernet-cables100.html