zaidulon,
Is there anything you don't have installed on your machine
What makes you think it's a DLL?
Have you tried the repair:
Go to Start>Run line>type
rundll32 setupwbv.dll,IE5Maintenance
I would suggest something to track your installs. I use PC Magazine's Install control:
PC Magazine's InCtrl5 v1.0
InCtrl5 is the fifth incarnation of one of PC Magazine's most popular utilities. By monitoring the changes made to your system when you install new software, it enables you to troubleshoot any unexpected problems that come up. Virtually every modern program uses an install utility that installs or updates files, and also may record data in the registry, and update INI files or other essential text files. A companion uninstall utility should precisely reverse the effects of the install utility. When a newly installed program causes existing applications to fail, or when the supplied uninstall utility can't complete its task, to restore your system you need a record of exactly what the original install utility did. InCtrl5 can provide this record. This new version offers a variety of new features, including an attractive new interface, the ability to track changes to text files such as AUTOEXEC.BAT and CONFIG.SYS, HTML reports, and command line switches. It runs under Win95 or higher, or WinNT 4 or higher. Older versions of Windows are supported by previous versions of InCtrl. If you are running Windows NT 4 or Windows 95, you will need Internet Explorer 4 or higher to preview HTML reports within the program.
Download link and help on using it is available here:
reghakr