bridge.dll is created by some spyware/adware and is not vital to your system.
It has created a couple of keys for it self in the registry and that's why windows gives you the error, you can remove the keys manualy or use a program like HiJack This (
http://tomcoyote.com/hjt/ )
Registry keys that's added:
http://securityresponse.symantec.com...favorites.html