Hi there, I own a slingbox which is sitting on top of my brothers Cable box in the USA. I have had some issues with my Broadband speed which seems to be resolved for now and I have a sync speed of just over 3mb. Just wanted to make sure I maximise my slingbox download speed as I only seem to get about 650kb/s speed when streaming. Do I need to open ports on my Thompson router? If so what settings do I use? Thanks D.