dwwin.exe is a part of the Microsoft Doctor Watson error reporting tool which comes packaged with some Microsoft products. Related errors might pop up when there is too much errors in reporting.
File dwwin.exe is located in the folder C:\Windows\System32. Known file sizes on Windows XP are 180,224 bytes (97% of all occurrence), 162,128 bytes.
It is a Windows core system file. The program has a visible window. The file is a Microsoft signed file. dwwin.exe is able to monitor applications. Therefore the technical security rating is 1% dangerous.
If dwwin.exe is located in a subfolder of "C:\Program Files" then the security rating is 42% dangerous. File size is 552,960 bytes. The program is not visible. It is not a Windows system file. dwwin.exe is able to record inputs.
So find the root folder of the file dwwin.exe to decide whether it is a Malware hacking your confidential matter or just a system file related error...