Every miner can only confirm transactions. Acceleration just means that they will give priority to your transaction in the next block they mine which for big miners is every couple of hours.

I am unfamiliar with "Windows Bitcoin Miner" and most are just malware. You can't just download a miner anymore, you need to buy special hardware in order to do any Bitcoin mining. I would suggest that you reinstall your OS as your computer is probably infected with malware (then again which PC that is running Windows isn't ? ).