If the cable router only has one network connection, you'd need a hub to get multiple connections. If you don't have a hub, might now be a good time to get a wireless hub (which would still have the ability to connect multiple network cables)?

Random other question that may end up just needing to be tried out:

So the new house I'm buying OMG is wired for ethernet. A bit random, but kinda cool, since it's three and a bit stories, so the wireless might not be super all through, depending on where you put it. But...does that mean I just hook up the router to one spot, and the rest of them are thus hooked up? Is it like having a lot of long ethernet cables already hooked together? I don't quite grok--there is a "smart panel" in the master bedroom closet but AFAIcan tell it's not....smart. Or special. Other than being the terminus of all the cables. I'm hoping that doesn't mean THAT needs to be where the router/whatever needs to go? (It's also where all the cable TV cables end up, it seems). A bit odd, and one would hope/assume that I'm not required to have my cable TV box thingie in my CLOSET.

The problem with wireless (which I have) is that for work, I download/upload really large files, and it doesn't do as well over wireless. The same with Roku; I've read reviews that say the streaming is less reliable over wireless. However, if that's wrong and Roku works just fine over wireless, then I can use wireless with one router and wire in to the another for work. My personal computing needs are satisfied just fine with wireless.

I have a Roku and it is on a wireless network. I typically have no problem with streaming videos but I cannot do so when Beau is on his playstation playing Madden on the Internet.

So it isn't great if two machines on the network are doing massive data downloads.

Hm. Presuming there's only one massive dl going on at a time, does it make a difference how far away from the wireless device the Roku is?

So we have a two-story house and the router is on the second floor.

The roku is on the first.

I have no problems running streaming Netflix on the Wii in the living room while simulataneously using streaming on the Roku in the bedroom (wireless on both).

Wireless it is! Thanks, y'all. Except my wireless router has stopped working. *sigh* The thing is years old; I probably ought to just replace it.

Pay a little extra and get the "N" router (not the G or B). It's worth it!

Hee. Yes, it is. I will.