Priya, one day you will read questions before posting.
Anyway Chris, the files in question are your DHCP database and WINS database TEMP files.
So firstly, they are fine to ignore as your system will repair them automatically.
Your WINS database can be rebuilt anytime, you really dont' care.
Your DHCP database is automatically backed up by Windows to the %SystemRoot%\System32\Dhcp\Backup\Jet directory,so as long as you cover this, your system will recover itself.
If you experience issues during restore, you can always copy the above directory into the C:\windows\system32\dhcp directory.
I would suggest unselecting these files from your backup selections, so that you do not get these errors.