possible wireless solution, ??? Options

[Connorrr]

so im facing a delema here. i have a 20 gig playstation three that is in another room than where my pc is located. i want to get my playstation 3 online so of course i need to be thinking wireless.

now the only way to do this with a 20 gig version is to get a wireless router for the pc and a wireless bridge for the ps3 to pick it up.
however this will most likely cost me close to 100$.

so i was thinking theres got to be a "wireless ethernet cord". as in a ethernet cord without the cord and just the inputs with an antenna or something.
so i was wondering if anyone knows of something like that and/or another cheaper solution.

i made a picture on the wonderful microsoft paint just in case i didnt describe what im thinking well enough.

[Connorrr]

i cant move my cable modem, it runs from the wall in that room.

[*Uronacid*]

i cant move my cable modem, it runs from the wall in that room.

Then you may have to run a coax cable to your room. I'm telling you, you will not enjoy sharing your connection through your PC with your PS3. There Will be unbearable lag.