How to Remove password_viewer.exe, Winzip123, bar311.exe, 
Here’s how:
First, we need to stop the virus from running so we can delete it.
run the Task Manager by pressing CTRL + ALT + DEL 
click on the processes tab on the Task Manager 
end the following processes: bar311.exe, password_viewer.exe, photos.zip.exe 
close the Task Manager window 
Now, we will need to tell Windows to not run it by editing the Windows Registry
click Start 
click run 
type “regedit” in the textbox 
click Ok 
The Registry Editor window should come up 
on the left pane of the registry window, go to this path: HKEY_LOCAL_MACHINESOFTWARE MicrosoftWindowsNTCurrentVersionWinlogon 
On the left side, look for userinit 
right click on userinit and click modify 
you will notice that the value in the text box is userinit.exe, bar311.exe or userinit.exe, password_viewer.exe 
delete bar311.exe or password_viewer.exe BUT VERY IMPORTANT: leave userinit.exe 
Next, we will remove folder restrictions that have been set by the virus:
Still on the Registry Editor, go to this path: HKEY_CURRENT_USERSoftwareMicrosoft WindowsCurrentVersionExplorerAdvanced 
Delete the following entries: 
“Hidden”=dword:00000001 
“HideFileExt”=dword:00000000 
“ShowSuperHidden”=dword:00000001 
Next up, we’ll need to delete the registry entry that causes windows to shutdown everytime the command prompt is ran.
In the Registry Editor, go to this path: HKEY_CURRENT_USERSoftwareMicrosoftCommand Processor 
delete the autorun key 
Lastly, we will delete the autorun.inf file
Open a notepad window 
Type this code in the notepad window: 
@echo off
c:
attrib autorun.inf -h -r -s 
del autorun.inf -h -r -s 
d:
attrib autorun.inf -h -r -s 
del autorun.inf -h -r -s
del /a /f c:Windowsbar311.exe 
del /a /f c:Windowspassword_viewer.exe 
del /a /f c:Windowsphotos.zip.exe del /a /f c:Windowspc-off.bat 
save the file as “command.bat” 
run “command.bat” 
YOU’RE DONE!!
If you’ve carefully followed all the instructions that I provided, your computer should be ready to go.
http://blog.edgelacorte.com/2009/01/19/how-to-remove-winzip123-bar311_exe-password_viewer_exe/