I got to the point where I actually wrote a program in Foxpro that lets you pick a TIF file, and asks you how many seconds you want it to show, and it creates the sequence of TIF images (all the same except for the filename) that Radtools.exe will make into an AVI file. It works fine, and I used it yesterday. The resulting AVI's look great in Windows Media Player or Nero Showtime.
I started using Nero VisionExpress 2.0 to do my video editing in preparations for producing my first video, and burning to DVD. However, I found it to be inscrutable, aggravating, and rather unstable - all to the point where I had to finally give up in complete disgust and use Ulead VideoStudio 6.02 SE instead (I had two versions: Version 5.0 DV, which came with my Canon Optura 20 camcorder, bought recently, and Version 6.0 SE, upgradable to 6.02 SE via downloadable patch, which came with my Winfast TV2000 XP Deluxe TV card). That program is not entirely great either, evidently, but I was able to figure out enough to edit and rearrange some clips with reasonable stability. Yes, I did have to quit the program a number of times, due to evident instability and probably some user error too, but I finally got my video close enough to acceptable where I said, "hey, that's it, that's good enough, let's burn."
However, I did discover that when I dropped those 6 second still-shot AVIs into Ulead VS, they got scrunched! They stretched to the sides of the screen for some wicked reason and I don't know what I could do to fix that. Maybe changing from 15 frames/sec. to 30 frames/sec. (assuming that's possible) would have fixed that, but before I went looking for a way to do that I discovered the obvious: I could (and did) drag and drop my TIF images right into the timeline and gave each one a duration, and that was that! Don't need those stupid 6 second AVIs at all. Maybe I did with Nero VisionExpress 2.0, but thankfully I'm not stuck using that! I suppose it's me to an extent, but I find that program impossible.