Thanks for the advice, fifig! Sorry it took so long for a reply. My aged, feeble, home computer is giving me only short spurts of time online. I spent most of the weekend shutting it down and logging on anew over and over again. Most everything I do locks up - even electronic solitaire - which is how I kill the lengthy time it takes me to coax a website onto my screen.
And...unfortunately, the sound is now garbled, leaving me with no means to play a DVD at all, even one with an irritating voice. Grumble, grumble. Drat these newfangled inventions! I'm determined to buy a new one soon, though.
To answer your question, yes, I can stand up to exercise (with a few adaptations), which I credit to the fact that I've been exercising regularly for many years. One cool thing I've found out about kettlebells is that many of the most strenuous and invigorating movements can be done with my feet planted firmly on the floor!
The one-legged lunge type exercises are more difficult and require that I hold onto something for balance (plus, my knee is screwed up). Same thing happened when I took yoga. Surprisingly, kettlebell routines seem much more suited to my physical infirmities than yoga is, altho they look like they'd be more challenging.
I think I'll order the DVD you mentioned and hope you're willing to answer questions when I try it later.