Here's an earlier answer on the subject:
It sounds like you've received an 'eRumour'. A warning that says to search your Windows system directory for a file called hidserv.exe and delete it. It is said to be collecting your personal data and passing it along to someone else. The truth is that hidserv.exe is a file in Windows 98 Second Edition. It stands for Stands for "Human Interface Device Service." It is a file that deals with keyboards, mice, and other devices connected through the USB bus. It is an official Windows file and has nothing to do with "mining" information from your computer.