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So here's the situation:
I've got my desktop computer downstairs which is connected directly into my new wireless modem that my ISP gave me.
Upstairs, I have my TV and my PS3 which is connected directly into my old (non-wireless) modem which my ISP conveniently let me keep so that I could have a connection upstairs.
I also have a wireless router which I'm no longer using because I have the wireless modem now.
I'd like to stream videos from my computer to my PS3 (via PS3 media player), but I don't know how to establish a LAN connection.
Is this possible? How? Running a cable from downstairs to upstairs is not an option.
If I have to do it wirelessly, how should I set it up? I'd like my PS3 and PC both to remain wired to the internet directly. I can move the 3 modems/routers around where-ever though.
Edit: I can probably find one more (maybe 2) wireless router lying around if it helps.