How do I create a "If lost and Found" Type of screen shot

Connect your Nuvi to pc. Copy a jpg pic to your SD card. Or as many pics as you want.
Disconnect:
Tools> Picture Viewer>Touch thumbnail> Touch icon> Check: Display at power on

If you have a PC, you can use Microsoft Paint to create/modify an image as the lost and found screen. Gary Hayman had a screen that could be downloaded, but I don't know if his site is up any more or not.

http://home.comcast.net/~ghayman3/garmin.gps/page5.htm#splas...

and do a find on "lost"

I wonder what happened to Gary Hayman. His Tricks and Tips section hasn't been updated since May 2012. On the other hand his Twitter page was updated today.

I put my picture and cell phone number on the image.

Finally found the web site that I couldn't remember.

http://mynuvi.xoom.it/auto_splash/auto_splash_EN.html

http://garmin.gps-data-team.com/splash_screen.php

Well that way the bad guys will find ya' for sure!
GPS to go "Home" and phone number to do a reverse number check to make sure of the house number and street!

You're extremely naive if you think that without the screen that might get a GPS returned and a home set in the device that you can't be found. Garmin always records a track log. The display of the track log can be turned off, the log can be cleared, but as long as the GPS is used it will keep recording where the receiver goes when powered on. It is easy enough to enable the track display and look at the blue lines already recorded to see where the unit has been traveling to and from, and easy enough to figure out from that where your home is. Saying that to keep someone from putting a screen on their receiver that might get the device returned is just more fear mongering.

You must live in a horrible place. Around here, someone would find it and phone me where they live, so I could drive over and get it.

But how are you going to find their house without your trusty gps! hahaha

The image my GPSr displays on startup simply provides my eMail address in case it is lost.

I would like to do this on my 2757, but it does have a micro SD slot but no picture viewer. How would I go about this?

My first question would be how do you lose your GPS unless it would be stolen, and then I don't think you would have to worry about it being returned. When I'm done with mine the first thing I do is pull it off the dash and depending on where I'm at I either take it in the house or motel, or lock it in the trunk. Otherwise I can't see how I would lose it. The only GPS that I know of that was ever lost was a handheld that was left on the roof of a car when a friend was geocaching.

Relatively few people actually plan to loose a GPS, but it could happen. Particularly if they are not silly enough to leave the device in the car and always take it with them. Your own mentioning of a motel is a good example, people leave things in a motel all of the time. Over a lifetime I've personally left both shoes and even my return airline ticket at motels, it isn't beyond imagination to think that it could happen with a GPS. Putting up a custom splash screen is just a reasonable precaution. One hopes it never gets used, but it is easy enough to do and, unless you are insanely paranoid, you would regret not doing it once it was too late.

Unfortunately the odds of someone stealing my GPS and using it to find their way to my home and rob me are much greater than the odds of my losing the GPS and a good samaritan using that info to return it.

I doubt that you have any data to back that up, more likely it is just what you would like to think is true. But even if you were right, I don't believe that you change the odds of being burgled in any way by putting up a custom splash screen, and certainly not if it just includes a cell phone number (or, as in my case, a Google Voice number) and an email address. Us thieves still know about turning on the track log and following it right to your door. On the other hand, you greatly reduce the chance that an honest person might return it to you if you don't give him or her a way to do so. And you decrease it even more by lying to the person with "you're being tracked by the F.B.I." type nonsense or home addresses set to cornfields in the middle of nowhere, no matter how smug that makes some people feel.

So you clearly don't want to put up that helpful information screen. But there is no point in arguing against doing it when someone else does and asks how to do it.

When figuring the odd, you should always consider what you stand to lose (if anything), the cost of doing it, and what you might stand to gain.