Tankersmash

Ugh, I've got to be slow or over complicating this somehow. (Or I'm just bad with computers.) Anyway, so I've got archive invalidation and the Fallout Mod Manager running fine. This is something of an accomplishment for me, at this point. However, using the other mods is... looking kind of impossible for me. So, I'm confused. Every time I try to put another mod pack inside the data folder, it says that it will need to overwrite the original Meshes or textures file. This results in lots of big red exclamation points in game. I know I'm getting something wrong, but I don't know what. Please help? ***EDIT*** Okay, doing a bit of digging, it seems like I should get a ~Merge Folder~ option when I try to move my files. Instead, it just says that it needs to overwrite them. Is there a reason for this? (By the way, Im using windows XP.) **Edit Edit** Aaaand major fail for me. Just got it figured out. Thanks anyway!