I already have REmake, i have a tool called GC Explorer, now how that i can change the skin of Chris? If you can't understand me it's because i am from brazil.
Oh i downloaded the wrong tool...
EDIT
Now i downloaded the GCR Builder, i'll make a backup, just in case
EDIT 2
What file i replace? em00?
Look. You must have Remake Tool (http://s4.invisionfree.com/Resident_Evil_1_2_3/index.php?showtopic=928), open pl00.dat -> extract texture -> edit in tga2tool -> replace in Remake Tool -> press "Repack" (in Remake tool) -> upload your new pl00.dat into RE Remake CD iso :)