So...editing /home/myname/.fluxbox/startup as noted above did not work. I copied the startup file into a test file, and ran it as a shell, but neither it nor I could find the executable for GKrellM2. I'm not sure why.
One of the videos on an older version of Vector instructed one to go to Menu->Settings->Startup.
The similar path in V 7.0 is Menu->Applications->Settings->Session and Startup. The appropriate command for GKrellM2 is the same as that for GKrellM, i.e, gkrellm (gkrellm2 won't work). Adding that to the list via this menu worked. I logged out and back in and voila! GkrellM2.
I originally configured CUPS by going to Menu->Applications->System->Configure Printing. When I first tried to open it, it wouldn't open the CUPS admin window. I tried the same as root, but to no avail. It finally dawned on me to restart CUPS (etc/init.d/cups restart), and then it worked. So I needed to get that to happen automagically on boot.
I got CUPS to start by going to Menu->Applications->System->vasm->Super->SRVSET->Graphical User Interface Desktop, and then clicking on the button for CUPS for run level 4. I then exited all the way out, logged out and back in, and printing now works at startup for everything.
The tutorials are excellent if one translates to the newer menus in 7.0. Right now, my system is largely doing what I want and I'm a happy camper.
Now, if I could just install Clementine...
Thanks to all for your help!