Someone mentioned Delorme Streets Plus 2006 on this site last week or so, it got me thinking about trying to see what I could do with the program on the farm.  I have several ideas on how I want to use it, and was very pleased it had all my local roads, right down to some dirt roads out to some oil wells that are no longer used.

I think I now know what I want to do with the program, now I am having trouble using my laptop in a vehicle during daylight hours. 
Currently, I am writing this with a towel over my head and the laptop, the only way I can see my laptop in bright sunlight.

How do you guys use a laptop in the daylight hours?  I assume there must be some kind of sunlight screen available to attach to the laptop?  I look kinda funny using GPS with a striped towel like the runaway bride over my head, how do others solve this problem?