Using Galaxy SII as wireless adapter/receiver

[KNiVES]

My pci wireless adapter is terrible and useless, but my phone can pick up a full-strength signal easily without any issue. I was wondering if it's possible that I can use it as the wireless receiver for my PC (It's plugged in via USB at the moment)? It connects to my PC via Kies just fine and it would be tremendous if it can tunnel its connection through to my PC.

edit: I've looked at the USB tethering options, but why does it HAVE to use the data plan? Why can't it just use the wifi my phone is currently using? This is a ridiculous oversight

 

[KNiVES]

DG834G which is fine as my other five devices in the household all work with 90-100% signal strength. The PC wireless adapter is some general Edimax rubbish that has never ever worked properly but has rapidly deteriorated further recently.