I used to own Sennheiser RS110 (?), and they sounded ok for very basic computer needs, but they were kind of loose on my head and woud feel like they were going to fall off every time I leaned forward.
I agree with YoYo about going wired. Presumably there would be extra latency with the wireless headphones, and that might not be a good thing if you're a gamer.
I see Audio Technica A500 and A900 recommended for gamers and light music by many, and they even work well without an headphone amplifier.