You could bury the cable in the carpet. Or if you used plenium rated cable you could run it through the AC duct. Or you could just use WiFi and call it a day.
I have had good luck with my EVGA GTX 460. No problems what so ever.
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130597&cm_re=evga_gtx_460-_-14-130-597-_-Product