Do you have a digital still camera?
Here's an experiment to try and see what happens when you do something like this.
Start a new Vegas project at standard size.
Import an image from your digital camera (hopefully the image is something like 2500 x 200 pixels or larger).
Drop this on the timeline, open the Pan/Crop window, right-click and select "Match Output Aspect".
Now zoom in on the image and do some panning around on it.
You'll see that, as long as you don't zoom in 10X, the image quality holds up quite well.
That's because the Pan/Crop tool is using the resolution of the original (much larger) image.
The same thing happens when you import a video clip that's larger than the default 720 x 480 into it. The resolution of the original clip is maintained.

That is terrific. Thanks Mike. A bit different than I am used to, but much easier.

Again,
Thanks for your guidance!

Randy, I'm glad to hear that you got it sorted out.
Now start learning all the other great features that Vegas has :-)