Can I use a wireless access point to capture wifi and just plug in my Laptop?

I can get Wifi in my attic but not in my room downstairs. I want to get/make something that will capture the signal so that I can either plug in my laptop using an ethernet cable. I have looked at making things like a cantenna but I can not figure out how to get the signal to my laptop from the coax cable. Can someone please help.

Sandisk1duo8 years ago
get an wifi to Ethernet converter, but they are a little expensive.. google it then buy it one ebay
another alternative is a wireless router receiving the signal then running an ethernet cable downstairs. I may be wrong, but I think it's called bridging, so the wireless device either needs that functionality or it should be dd-wrt or tomato firmware compatible