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]

the second one would work but the computer in that room at the momnet is the only one with internet and is the "family pc".

so it cant be moved unfortunately.