Help =( need to flash ROM in my tab i957

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http://forum.xda-developers.com – i bought a galaxy tab 8.9 with android 3.2 , and after unlock and do various thinks , i have the recovery and SU , but i want to apply the Custom ROM cm10 unofficial , and i don't now how use odin much... so i see this treath http://forum.xda-developers.com/show....php?t=1867579 but to be serious , i don't now where start , so if someone could help me i'll be really appreciated , thanks... (HowTos)