Clean excel.xls excel4.xls  virus - regedt32.sys pagefile.exe virus removal:
Here is a step by step set of instructions designed to help you clean up the virus:
1. Temporarily Disable System Restore, Reboot computer in SafeMode;
2.Find and delete the following files in the folder:
%USERPROFILE%\local settings\temp\7a6bf18f47dfc9960c786d20010b9c71d2d8c046.exe
%USERPROFILE%\templates\excel.xls
%USERPROFILE%\templates\excel4.xls
%USERPROFILE%\templates\winword.doc
%USERPROFILE%\templates\winword2.doc
%WINDIR%\help\helpcat.exe
%WINDIR%\regedt32.sys
%WINDIR%\sysinf.bat
%WINDIR%\system\kavupda.exe
%WINDIR%\system32\exceres
%WINDIR%\system32\option.bat
%WINDIR%\system32\wordres
c:\documents and settings\default user\templates\excel.xls
c:\documents and settings\default user\templates\excel4.xls
c:\documents and settings\default user\templates\winword.doc
c:\documents and settings\default user\templates\winword2.doc
c:\documents and [...]