|1stly i want to tell im bad in english.|
ok lets go to the point.
wireless is difrent with utp cable. wireless is maximun connection about 54mbps. cable (utp eathernet is about 100mbps and latest is 1Gbps). yu also must takecare about wireless interferences such as if you got gate alarm (automatic) which sending radio signal can make your wireles modem/router free to interferent.
3 meters from box. that more better you use cable.
for more details you can visit my blog. http://pokyeh.blogspot.com
today i also release new lesson software in my blog for who want learn about networking. its usefull for beginers and expert.