Good long range wifi adapter?

[Jonnieboy Nickerson]

so i need a good long range wifi adapter. i live on the third flood and the modem is on the first floor, whats a good long range adapter that would work good for this situation

 

[RunLuke]

Without being 100 % sure I'd say the most limiting factor is the access point itself.

 

[kanewolf]

You should consider powerline network adapters and an access point if you require WIFI.