Dave & TIG,
I thank you BOTH for stepping in to help me with this matter. I am now straight, and can't wait til I have time to really settle down with delving deep into this program's innards. TIG's mention of a 'Download Manager' is what did the trick. I downloaded and installed one, and the first attempt, after that, to grab the desired file proved to be successful. With the many Sketchup Youtube Video Tuts I found, I should be up & swinging in hardly any time at all.
One question for Dave, though: I see that you are a woodworker, also, but that you are licensed for the 'Pro' version of Sketchup. I am reasonably sure that there would be some elements, in the Pro version, that would be helpful for the woodworker. But are there features in that 'Big Boy' which would be essential to same? I am really hoping that it's little brother would serve my purposes well.
Advanced thanks,
Nathan