Ok, thought I would give a little more info since I've been trying to get mine to work properly and still give me the bandwidth I was used to..
Ok, so I took the PCTV router and unplugged it from my router have 2 seperate routers with no physical connection between the two. I did notice some if not most of my normal 600k stream come back but since my PC is using a linksys wireless NIC i guess its still relating to the PCTV router. Anyway, one thing to always keep in mind is that if you want to use this type of wireless gadget your gonna have to have a wireless-G rated NIC because 802.11b wont cut it. It will tell you that it needs "G".
I just thought I would share that much because thats what I've come across so far..