And I don't. It's vastly more trouble than could possibly be necessary. Personally I've never had to do it, and I've been running Windows since 3.1.
Gawd, then you must remember the winsock and how it allowed one to magically connect to the ether.
On the subject at hand, a re-install is estimated to be about 3-5 hours work with much of it proceeding unattended. In reality, however I discovered myself getting things back to 'normal' in less than a weeks time - mostly.
At least we can agree to disagree on this one, GTW.