What is regedit.exe? Should I remove it?

From Microsoft: “Regedit.exe is the registration editor for 16-bit Windows. It is used tomodify the Windows registration database. The database is located in the Windows directory as Reg.dat. The database contains information about 16-bit applications, and is used by File Manager for opening and printing files. It is also used by applications that support Object Linking and Embedding (OLE). Reg.dat is used and maintained by Windows on Windows (WOW)and 16-bit Windows applications. The WOW layer resides on top of the Virtual DOS Machine (VDM). Regedit.exe is a 16-bit application that is included in Windows NT for compatibility with previous 16-bit applications. Regedit provides a method for examining Reg.dat under Windows NT. You can migrate the Reg.dat database file to the Windows NT registry during the first logon to an initial installation of Windows NT.”

regedit.exe is located in “C:WINDOWS” on Windows 95/98/ME/XP and “C:WINNT” on Windows NT/2000. File regedit.exe is related to worm Doomjuice.b. regedit.exe is an executable file which primary purpose is to start a parasite or launch some of its components. Once executed, the regedit.exe file runs a process that is responsible for the parasite’s payload. regedit.exe is a significant part of a dangerous threat, but it can also work on its own. DO NOT execute it!
The regedit.exe file is installed and used by QQify.
You have to delete the regedit.exe file immediately after you have found it. The parasite will continue to violate your privacy and harm your computer unless regedit.exe and all related objects will not be completely removed from the system. If you have difficulties erasing the file consider using an anti-spyware program.
Please note that the regedit.exe file actually may be a fully legitimate part of the operating system or legitimate software. Often parasites use files with unsuspicious names, but malicious functionality. You should always carefully check the file before deleting it. It may not be related with malware, but can be required by your essential programs to work properly.