Rick's suggestion is a good one. Besides that method, to create a montage of slices across time, you could extract specific slices for specific time points with 3dZcutup and then put them back together with 3dZcat as a single volume, then just use the montage function in the image viewer.
Even if you just save each of the slices with the image viewer save function, you can create a montage with imcat.
You can also set up multiple slices from different time points with multiple AFNI controllers and save the layout file.
The environment variable AFNI_NOSPLASH set to YES will turn off the splash screen. We're used to seeing Ziad fester, so it doesn't bother us....