Pashuteh Yid-
The approach some people take is to disable the wireless network adapter either via a script or a batch file. You may want to gogle “devcon.exe” and/or “disable wireless network adapter”.
Even if you install another browser, I don’t think it’s practical (or even necessarily possible) to remove IE entirely.
What we do is have the computer literally in the middle of the living room.
The easiest approach might be to just buy software that blocks, monitors and reports attempts to circumvent the security.