Like Budman said, just do a search for MSDOS.SYS, and open it with notepad. Make sure to change the properties so it's not read only. Add Logo=0. I didn't know you could put it at the end, I usually put it after WinVer. Anyway, you can also add BootDelay=0 to take off a couple of seconds off your boot time. Change the properties back to Read Only, and your set.
I never much liked Tweak UI because of the stock settings. You actually have to go in and change a bunch of stuff just to get back to normal operations.