We have a D-Link DI-614+ Router. It has 4 LAN ports and one WAN port on it. My mother has a laptop and wants her internet to be wireless, whereas i'd prefer wired (I just feel more secure with wires

I've always had troubles with networks of any kind. Would there be a cheap router or something we could purchase to do what we want it to do if our Router can't?
Thanks,
Seltox