".Rez Files are LithTech Game Archives used for LithTech Jupiter Engine Games. Some LithTech Jupiter Engine Games can be extract/repack with WinRez LT Studio available on the net for download, but for Korean Developed LithTech Jupiter Engine Games like Combat Arms, SuddenAttack can be extract from its launcher and Games Files can be found on your Temporary Folder..
SA_CHARACTERS.rez
"/game/sa_characters/skins/ -Character/Hands Skins- "
SA_INTERFACE.rez
"game/sa_interface/ -Menu/HUD Skins- "
SA_PPL.rez
"game/sa_ppl/ -Ingame Ads Skins- "
SA_TEX.rez
"game/sa_tex/ -Map Skins- "
SA_WEAPONS.rez
"game/sa_weapons/skins/pv/ -1st Person Weapon's Skins- "
"game/sa_weapons/skins/tv/ -3nd Person Weapon's Skins- "
DTX Textures can be view DTX Viewer supplied by WinRez LT Studio and can be edit with Photoshop CS and exported with DTX Plugin.. available on the net for download, if you know UV Mapping you can edit DTX Textures correctly.."
- https://www.mpgh.net/forum/showthread.php?t=128521