Connecting DSL to Hub to wireless router

I am retired and trying to help my son-in-law in his new business. He has a DSL modem going into a Netgear Prosafe VPN switch (FVS318V3)with only one port vacant out of 8. He wants to add 4 more PCs and a printer to the network and he wants them to be wireless. We would prefer to use the automated setup as we did with the Netgear device due to our lack of networking skill. Rather than buy a wireless router with 8 RJ45 ports, can I just connect a smaller Linksys wireless router to the vacant port on the Netgear unit and have it automatically set up the IP addresses for the 4 new wireless PCs?
If not, what do you suggest?