If you are thinking of having your PC reformatted, consider your options before taking it in .... the avg price is about 100$+ for a bare Operating System installation.
With the format comes anti-spyware, anti-virus, firewall, 5 maintenance programs and a number of performance enhancement tweaks for 50$.
For all you Vista users that are dealing with the most horrible operating system known to man....I can get you back on beloved XP for piece of mind....again for 50$.
In most cases, you bring it in today...its ready tomorrow.
