What would I do?
I'd try disabling the driver with autoruns by Sysinternals, for instance. Or seek if it comes with an application that can be uninstalled along with the driver. I'd try disabling or removing the wireless hardware, if it's usb or pccard.
Or maybe I'd simply rename the driver rt61.sys in c:\windows\system32\drivers to rt61.bak so that it wouldn't be found at next boot as rt61.sys, and I'd rename it either from safe mode or - if it doesn't work - from recovery console, and rename also all instances of the file on your hard disks so that it cannot be reinstalled automatically in case your hardware is recognised as new.
I'd try to have updated drivers ready for the need in order to reinstall the hardware (which is probably what you'll have to do, so you'll need your wireless network settings at hand). I'd just rename it, not delete it, just to be able to revert changes if needed.
Or maybe I'd see if I have a different version of rt61.sys available, and just try that one.
I'd also try to see if the wireless hardware is secured firmly, triple or quadruple checking the wireless card.
I'd take a look at the event viewer to see if an automatic (or not) update was installed and revert to a restore point if this was the case, update the driver and reinstall the update.
You should just try analysing your PC and choose the method that best suits your skills. The most potentially painless in case you screw up something, in my opinion, should be searching for all instances of rt61.sys and rename them as mentioned above. Use advanced search, search in all hard disks, hidden and system files too. Rename the files. Use recovery console for files that can't be renamed in safe mode. Write down every renamed rt61.sys so that changes can be successively reverted with recovery console if something goes wrong, I'd try booting in normal mode, then reinstall the driver.