Tsallik

I have a friend that would like to edit the textures of an avatar I bought in the store that includes some attachments. I was wondering how I could get them to him so that he can change the textures? He has the programs in order to accomplish this and the attachments can be modified, however I'm unsure if I can attach the texture myself due to it being labled "multiple textures". In this case, how would I go about in getting the objects to him? Would I have to pull them from my computer some place? Or will he have to get Second Life viewer in order to even get to the avatar and attachments? I've poked through the Second Life files and searched the database for answers to no avail, so any help would be appreciated. Thank you.