A friend has an iMAC G5, software version 10.3.9, 1.6 GHz, 512 MB DDR SDRAM. It still does the job but she would like to add a wireless router for laptop convenience. I can't quite figure out if this machine has the wireless networking option (which I think is required). If not, is this something that can be added without too much cost or difficulty? I know a wireless router will also be needed. It uses a DSL internet connection if that makes any difference.