Easy to use and fairly comprehensibly disastrous. After you have negotiated your way round the efforts to immediately upgrade and part with many dollars - having already paid for the product - it gets down to work. My PC was far from being choked up, so, at the end of the process, I didn't see any improvement in speed of application launching.
I did see that , amongst some other minor glitches and losses, it had rendered my DragonDictate Preferred 10 application unusable. It would not load, because some of the user files had been wiped as had the downloaded upgrade. In fact, all stored downloads had been cleared.
Having tried various ways of remedying the difficulty caused by Speed Up My PC 2010 (PC)
, I had to use System Restore to go back to before I had installed it. DragonDictate would still not load, so I had to uninstall and upgrade.
About two and a half hours work, some anxiety and frustration and a waste of £10. Needless to say, I have not reinstalled SpeedUpMy PC. Be warned!