My msvbvm60.dll mysterisouly renamed

Dear all,

In one of my XP workstation that runs Windows XP SP2 equipped with only Norton Antivirus 2004 found the msvbvm60.dll always renamed. For example it renamed to msvbvm60.dll.249. I have tried to renamed to original filename, but it kept always renamed again to another extention, for example msvbvm60.dll.743.

I can not attach the HijackIT! result of that computer, because I can not run it since the computer can not found msvbvm60.dll file. Also I can not not install Grisoft’s AVG antivirus because of msvbvm60.dll was not exist.
My Microsoft Office, IE and Outlook can run well on that computer.

Some application can run well in that computer, some are not.

Can anyone helps me ?. Thank you