protstat.dll is part of a product called known as Protect XP and the developer is Quartzo Eletrônica Ltda. .
If you think that this file contains a virus or another malware, please download a virus scanner.
If protstat.dll is using too much CPU or too much memory in your system, it is possible that your file has been infected with a virus. Installing an antivirus is recommended.
Not all processes can be uninstalled without the help of a 3rd party tool, especially malware. To see if it can be uninstalled, first go to Start > Control Panel > Add/Remove programs and select Protect XP from the list to remove the process protstat.dll from your computer.
If you have any problems with protstat.dll, you may try using a registry cleaner or a speed-up software to check, analyze, and fix problems that are affecting the performance of your computer.
You may try contacting Quartzo Eletrônica Ltda., the developer of protstat.dll and ask for more information.