If you are running a stock 6.1 manila, your logo is contained in \Windows\443d5315_manila. I'm guessing that Brent372's cab is replacing that file. (I haven't looked at the cab . . . Brent . . pls correct me if I am wrong.) If you don't have that file in \Windows, I'm guessing that Brent's cab won't work, at least for now. As Brent pointed out, if there is no file to replace, then it's probably not referenced by whatever is supposed to point at it (<<-- vague statement . . lol).
If you're running 6.5 (MightyROM, etc), there is no 443d5315_manila file, and simply adding it won't work. I think that the logo is coded in another manner. In
THIS THREAD , jdmsleepr advised that he looked through 6.5's manila files and couldn't find the logo. (Post 584 and some others before it.) If you're looking for other logos, that thread is a good source.
It's gonna suck if someone can't figure this one out for Manila 2.5. I'm personally running 6.1, so I don't have a Manila 2.5 file set to look at, at least for now.