Okay lets start with what version are you using.
Rick made a assumption that you upgraded.
Did you?
I ask because:
I don't recall /images/general/vbb in version 7.x at all.
/images/general/default_dark does exist in the 7.x series.
Also posting your forum url helps everyone from asking the same basic question.
So to answer your question , You would get the current version files in the members area:
http://support.socialstrata.com/members/members.php
