GPSr screen capture / customizing your startup screen
From MalsingWiki
Most models of Garmin GPSr support transferring current displayed bitmap to your personal computer. The advantage of doing this is that the image created will be an exact copy of what is displayed on your GPSr, the best camera will not be able to capture this. You will need your serial/USB cable.
You can also customize your Garmin startup splash screen. Using xImage, download your Garmin splash, edit it without changing the size or colour depth and upload it to your Garmin. Remember to make a backup copy of your original startup splash screen for you to restore it when needed.
Utilities to screen capture your Garmin GPSr
Garmin xImage (Windows)
http://www.garmin.com/support/blosp.jsp
Click on your Garmin GPSr model
xImage download link will be displayed if your GPSr is supported
Go7towin (Windows)
http://www.gpsinformation.org/ronh/
The screen capture feature do not work on the latest firmware of the Legend C (2.6)
Neither does it work on the latest x-series GPSr. According to the s/w developer, Go7towin will not be updated for this x-series receicers.