Motorola Droid :: Keep Screen On When Using Google Maps / Gps?

Lots of time while driving in an area i am not familiar with, I just want to keep google maps up so I can double check where I am going/at. I am not using navigation or directions, just seeing how far I am from hwy, if there are other roads to bypass traffic, etc.

I normally just keep my phone at this point in the cupholder, and will pick it up at a red light to glance at it.

Of course, i have about 5 seconds as the light has already turned green, and of course, the screen has already blanked out. So now i have to hit the power button, hard to find with one hand and maybe the keybd is out, then unlock phone, etc.

I read some threads about different programs, screebl, etc, but I just want that when google maps is up, the screen never blanks out. Ideally, it would be great if the screen dims, and if you touch it it comes back to full power, but that is the ultimate way. Just staying on is fine.