Also would any veteran modders tell me were all the pipboy images are located to place them on a new item( a new type of 9mm bullets). I could not find any of the .dds pictures, what folder do you look in? And access to meshes.
Unfortunately, GECK doesn't let you select files that are in BSA archives, although it loads and uses them. To access them you'll need to extract them from a BSA (use FOMM, for example), place it into the correct subdirectory of your Data directory and then make GECK use it.