I downloaded several MODS from the site (gramaphone, skins for U-boats, Convoy updates, ship updates, ect.)and when I try to open them with WINZIP 10. they either don't have the readme file so I'm not so sure if I'm sending them to the right file/folder in the game. As a result they don't appear in the game when played. ant suggestions?
Usually, the mods contain the needed directory structure (...you'll know, for example, by them being in a folder called 'data'). If that's the case, you can tell where they are supposed to be based on that.
If it doesn't, and it just contains files (and no folders), one trick I use is to do a search in the ORIGINAL SH3 folder (not the mod) for the a file of the same name. Chances are, the mod files replace THOSE ones.