ZyXEL router wlan to lan connectivity

I have a ZyXEL ZyWALL USG20W router and I'm trying to transfer files between an xbox on the lan and my iMac on the wlan.

I tried the solution here, using ssh instead of telnet, because telnet wasn't working:

http://www.dslreports.com/forum/r21753745-Zyxel-P2602hwd1a-No-connection-between-WLAN-and-LAN

but getting a command not found after trying "sys general load 1".

I tried the solution here:

http://www.zyxel.se/web/support_pro...yGroupNo=367FE6C2-C958-4FDD-BA2D-6404D45BB7EA

but it locks up my router, and have to do a hard reset using the button on the back of the router. Any ideas?