checkreg.exe is a known virus utility. Backup your PC and delete this file, or perform a free scan of your PC to be certain.

checkreg and it's associated process, Trojan.Danmec, are known to be a type of virus. Before making any changes to your PC, you should backup your files, or create a Windows system restore point, so you don't lose any important data.

A good way to ensure that you only remove virus files is to use Computer Associates's free scan of your PC.

If checkreg.exe has been found on your PC, the chances that different kinds of adware or viruses are still on your machine are pretty high. Get a free scan of your PC.

tmp333.exe is known to be a type of harmful file. You must remove this process from your hard drive right away.

Adware.W32.PacerD is a type of malware, and tmp333 is linked to it. Spyware and viruses often masquerade as essential files, so backing up your hard drive before deleting files is a very good idea.

To be sure that you are not removing essential files, use Computer Associates's free scan of your hard drive.

Since tmp333.exe is running on your hard drive, there is a good chance that more harmful file is lurking. Using this free hard drive scanning toolis a good way to avoid any future problems with spyware and viruses.

It's likely that musirc4.71.exe is malware or spyware. This file, and possibly others, are running in the background on your PC. Deleting these files quickly is very important.

musirc4.71 has been linked to the malware W32/Randex-QA, and should be cleaned right away. Before making any changes to your PC, you should backup your files, or create a Windows system restore point, so you don't lose any essential data.

To be sure that you are not removing essential files, use Computer Associates's free scan of your PC.

Since musirc4.71.exe is running on your PC, you'll probably come across more spyware if you do an extensive search. Scanning your PC for free is the best way to avoid major problems in the future.