hi i just downloaded NAV corporate 8.1 from shareaza. when it finished it was in a folder. there are 8 items in the folder for NAV corporate 8.1. first file is a 594,790 KB IMG file. then theres a 1 Kb CCD file. then a 1 KB CUE file. next a 24,278 KB SUB file. they all have the same name(NAV corporate 8.1). then there four files named NAV corporate 8.1 disc 2. they are a 1 KB CCD file, 1 KB CUE file, 15,343 KB IMG file, and a 6,341 SUB file. what should i do to these files to install NAV corporate 8.1?