The **AA file needs to have its textures set to the number you are using (use pcreator). The texture files are **AC-**AL. Weapon files are **CK-**CZ
Each model part (including weapons) is personally assigned a texture file. 0 = **AC, 1 = **AD, etc. So find the non stickman model you want, change its texture amount to however many you will be using. Find the textures you want to use from this mod and rename them starting after whichever is the last texture you currently have. So if you're using Cloud (RTAA) he only uses RTAC and RTAD I think, so the first texture you want you would rename to RTAE then RTAF and so forth.
Now copy/replace all the weapon models you want to use. Open the **AA file in kimera .95b and find your new weapons. Double clicking them will open the .p editor. From here you will see "Groups" select Group 0 (or whichever) and click "group properties" Then set the texture ID you want to use. Tada.
Moderator note: Thread moved to Mods. Also deleted some .gifs because of the ridiculous load time.