I'm posting a response to my own question!

The good news is that vMix has a solution for this problem built into the software. The bad news is that it took a lot of massaging.
You can adjust the lag in both the audio and the video. Just click on the settings for the audio device and you can create a delay in milliseconds You can also do the same for the video device. Click settings and advance then change the frame rate.

But it still wasn't that simple. By putting the Zoom recording in a video editing program, I found that I had about a ten frame video delay. But when I adjusted the video delay to 10 frames, it was a long way off. I kept trying various settings until I finally discovered that if I set it for a single frame of video delay, everything was synced. I'm not sure why there's a difference, but glad I was able to sort it out.

Follo...
Thanks for that information. Installing the virtual cable was a little confusing, but I was able to get it to work. That definitely solved the lag problem. Interestingly, before I purchased vMix, I contacted sales and they told me that all I would need to do to connect through zoom was hit the "external" button and then feed in directly. No one mentioned the virtual cable. Since so many people are using Zoom these day, you'd think that vMix would have a solution built into the software that doesn't require a plugin.
Once again, thanks for the advice. It definitely fixed the problem.
Rick