We are going waay off topic. But I'm going to be naughty and reply anyway because I'm bored.
I don't share the hysteria that predicts oil prices will "skyrocket" any time soon. We may see a gradual doubling or tripling in price over 10 years, but no economy rich enough to be buying computers will suffer from that. It's the third world that will have to forego cars. This is already happening.
As for a switch to electricity from oil, I don't see that happening. An investment would have to be made up-front that would negate the long-term advantage of switching from oil. Ie: It wouldn't work out cheaper than oil, even at a higher price, because of the costs of new battery powered vehicles.
More likely is that people are forced to cut back on their mileage, or switch over to biofuels. The people who do buy new cars will aim for more fuel efficient models (hybrids?), but the average age of the cars on the road is more than 10 years, so even a switch over to hybrids would be gradual.
Noone using heating oil would consider moving to electricity either. The losses at the generation end will always make it more economical to just burn at home whatever the power stations are burning.
If gas prices rise too much, the energy companies will switch back to coal. There's plenty of that to last for decades.
Bringing us slightly more back on topic, let's look a the cost of running my PC. Let's say it draws an average load of 150W and I use it 10 hours a day. That would currently be costing me something like £50 a year. Even at 10 times the cost for electricity, it's not going to bankrupt the economy on computer use alone.