The assumption that the internet had any effect on the USSR is laughable. I was in Russia in late 1990, and I can tell you there weren't many people with internet connections. By then, the USSR was very much on its way out.
One of the kids there, about my own age, had a Sinclair Spectrum ZX-81. I think that was quite unusual at the time.
That trip was amazing - it was very exciting for an 11 year old from a decadent Western power to be somewhere so different. The people were good though - especially the kids at the English speaking school we visited. I often wonder if they are all ok. Moscow and Leningrad (as was) are amazing cities, and I reccommend a visit to anyone - you get a real feeling of history. Of course, back then, they still had the PA systems on street corners. Even as a kid, that was a bit unnerving or alien.
It started with the Falklands in 1982 and later with the American invasion of Grenada...
That's completely untrue. They had absolutely nothing to do with the fall of the SU.
then the West started supplying the Mudjahideen (sp?) in Afghanistan, causing the Red Army to be shown for what it really was...
Even the death of 100,000 men was not a dent in the Red Army. Like Miko2d said, that war could have lasted for a hundred years, with no real impact on the USSR.
I agree with Miko2d - Gorbachev began the process with a spark. Socio-economic conditions outside the USSR merely fanned the flames.