Or repeater. There are a few out there. I will not go shopping for you, but have one and it works fine. At the time it was 40 bucks and a bargain.
There's a computer in my gf's house that's having trouble getting a wireless signal. Come to find out There's a concrete wall directly in line with the router and computer. I was thinking if I could get one of those PCI NICs with a wired antenna and place the antenna on the other side of the wall I would be able to get a signal. But, since the computer already has a wireless NIC with the antenna directly attached to it, I would really only need a wire and an antenna that could screw into the card.
However, at CompUSA today, the salesman showed me what he called a range expander/extender. It seemed pretty cool (the things that plug into the wall and redirect/expand your signal). I didn't even know they existed. The only problem is the one he showed me was $60. I don't want to spend that much. I do plan on shopping around the internet and trying to find one cheaper, but will it really be worth it? I would much rather spend $30 or less on a NIC with a wired antenna.
I also saw the antenna kits they sell but it appears they only work with boosting the signal from the router.
Can anyone tell me what will be the best/most cost efficient thing to do since I'm not too familiar with most of these products? Thanks