[Mr_ELiiTe]

Ok i'm a first time modder and i wanted to mod my gamerscore but i tried to use modio but that didn't work and then i tried horizon and everytime i click it comes up

blah blah blah
hznasm.exe
something like that (no blah blahs tho)
please can someone help i really want to mod

( im on windows vista no sp)

please HELP