what kind of mode do you want to configure since there are several working modes on Tl-WA5210G?
Need to set static ip on your computer to login to the configuration page.
here is a link to guide you to login: http://www.tp-link.com/en/article/?faqid=174

i'm not sure. just wanted to find internet from some hotels that are around. i tried to install it by watching some videos at youtube.
now no matter what i try in the ip when i put 192.168.1.254 on explorer i get that page does not exist. dunno what i did dunno how to fix it.

forgot to say that i work at a hotel and i live in rooms inside the hotel. we have internet for the staff i just want to get a better signal.
when i put the lan cable at my pc i have internet. when i put 192.168.1.254 sometimes it tells me that page does not exist sometimes it tries to connect me to the internet
that is for the customers. we can't get a signal from that internet here. i have no idea what i have done. can someone help me or should i call a technician?