XBOX 360 Network Connection Issues

My refurbished XBOX 360 Elite used to connect to my computer and the internet via ICS or a network bridge. After it was repaired for a disk reading issue, it doesn't even connect to Windows Media Center.

Here is my setup:

--------------------->Computer A (Wired)
/
Modem----->Wireless Router------
\
--------------------->Computer B, C, DSi, etc. (Wireless)--(ICS/Network Bridge)--->XBOX 360

My XBOX 360 is too far away from the router and I have no chance of moving it. I don't know why it doesn't work either. I tried resetting my wireless adapter, bridging connections, tweaking settings, etc. and it still doesn't work. The computer detects the XBOX 360, it shows it when I create a network map. When I test the connection on the XBOX its like this:

XBOX 360--------X--------Network---------PC/WMP//---------XBOX Live

 

just buy a wireless router. You can get them quite cheap if you look hard enough.

 

Yeah.
Get an Ethernet cable and connect it to your Laptop or some shit like that.
Go on YouTube, there's plenty of tutorials.