Maybe I misunderstood. I thought that's what you wanted because in your post you stated there is no file directory structure to search through and asked for ideas. david7457 and I both gave you valid ways of doing what you asked. If you don't really want ideas then please don't waste our time asking for them.
Sir, no disrespect, but your suggestion is weak. To expect a user to create a ghost project just to view the filesize of a JPG or PNG is a suggestion but not a reasonable one.
I'm not wasting anybody's time. Its a simple question; Is there a quick method to view the size (KBS or MBs etc) from C2 ?