I was able to connect in managed mode to the AP with my wifi.
and grab a ip address 192.168.1.100
If Zeroshell box connects to Linksys AP just specify IP address of AP as default gateway via menu [Setup]->[Router]. Also put Wireless interface of Zeroshell box into NAT list [Setup]->[Router]->[NAT].
If you can’t connect to AP from ZS, login to ZS via SSH and execute command
to see if your Wi-fi card is actually supported.
If it is supported and Wireless interface is named, for example, “wlan0”, then execute
iwlist wlan0 scan
to see if Linksys AP is in range.