Using an old router as an access point?

[StixxUK]

Just wondering... I'm setting something up where I'm going to have a few machines close together which I'd like to get wi-fi'd up, and was thinking that the best way would be to have an access point with the machines connected to it by ethernet cable.

Now, a decent access point (forgive and correct me if I'm using the wrong terminology here) seems to cost about £100. I do have a couple of old Sky routers kicking around from previous broadband connections. Any way to flash the firmware or something and use them for this purpose?

I suspect probably not, but if anyone can help, it's you guys

Cheers

 

[StixxUK]

Maybe I should describe a bit better.

One router, connected to the internet downstairs.

Another router upstairs, linked to the first by Wifi, with computers (and Xbox) connected to it.