My sister's boyfriend, who is a masters computer science student told me there is probably something wrong with the heat sink.

I've had my computer since 2005. Is it time to get a new computer or should I fix it up? How much do you guess it will cost to fix the heat sink or whatever?

I've heard good things about Macs, are they any good?

I don't know what computer I need.

I mostly surf the net and play some games like The Sims and Grand Thief Auto.