[adam_feldman]

dd-wrt lets you change the broadcast strength on some routers. check out their documentation for details - http://www.dd-wrt.com/

otherwise, unless you invested in commercial solutions (microwave transceivers), i believe you are stuck chaining together repeaters or running a cable.

[ivankirigin]

I don't mind spending a bit for a low end commercial solution, as long as I'll spend less than, say, $800, and won't get cancer from sitting next to one for a long period of time :)

Got any links or brands?

[cdr]

If you're willing to pay $800, why not just pay someone to run a wire?

[ivankirigin]

It's a rental and I'd rather have the equipment. I've lived in places where running a wire isn't really an option. I've done it myself before too, but that isn't even tenable. Also, I'd have to be pretty damn sure that I'm getting what I want for that money.

[anigbrowl]

What cdr said. It's kind of difficult to tell what the constraints are - how big is the distance, is it your home or an office etc. We use ethernet-over-power-into-multilpe-wifi in my house and it works.