Diamond Multimedia

Hi, I've been using a pair of Diamond 'Multimedia Speaker Kit 6863620100' speakers since as long as I can remember, though recently the 'PACKARD BELL iMEDIA 5094' PC I was using them with died on me, so before the old thing managed to collect heaps of dust I decided to send it to the scrap heap...

I want to hook up my gaming pc to a cheap tv on the other side of my room but then also maybe down the hall to a better tv depending if I have people over so can anyone recommend a decent hdmi cable that is 30-50ft or another solution I also think diamond multimedia had a wirless video...