Doors and Windows - Possible to add window to ext. steel door?

Hi,
I'm planning on replacing my double exterior steel door in our walkout basement with same size unit ((2) 3'-0" doors), but with windows on the top half of doors. I also plan on cutting a dog door at bottom of the fixed door. As I price these units out, roughly around $420 prehung, I was wondering if its possible to get a window kit of some sort to add to the existing doors instead. The idea being to save some money of course.
Is this something thats even availible?

Thanks for your help.
Eric

Yes, you can get any style of glass in your window provided you can cut the hole. The glass will come glazed to a vinyl frame, and is installed into the cutout from the outside. Then a matching vinyl frame with screws around the perimeter is installed on the inside. When the screws are tightened, it sucks the two halves together. The white vinyl frames must then be painted or else they will degrade in UV light and become brittle and discolored.

Your best bet would be to order these from a big box store or from a glass house.

XSleeper, is it difficult to cut out a hole for this? Is there more to it then drilling a hole and cutting out with a jigsaw?

I'm not going to steal XSleeper's thunder, but it is best to draw out the window on both sides of the door by drilling small 3/16" holes at the corners of where you want your window to go, and connecting the dots. Make sure the holes are a square to the door surface as you can get them. A cut off tool is the best thing for cutting the door with. A jig saw will go through 3 or 4 blades before you get it cut, and the results will be less than what you want. The cutoff tool (Dremel, Rotozip, etc.) will shower you with sparks, so wear eye protection and a dust mask. Once the cuts are made on both sides, take a thin blade knife and cut the styrofoam in the middle of the door and pop out your window hole.

I don't know that I'd use a jigsaw. The temptation with a jigsaw would be to cut the entire hole (cutting through both skins) at the same time. I'd be worried that the jigsaw blade would bend enough that while the top side would be fine, the bottom side might not be cut out perfectly. And those holes need to be "exact". And if you tried to cut one skin at a time, a short blade would probably beat down on the lower skin as the jigsaw made it's stroke. A jigsaw might also leave a jagged edge that you'd need to file or grind down. I'd suggest you mark the cutout on each side of the door, ensuring that your measurements are exactly the same, then use a 4 1/2" grinder with a thin 1/16" metal cutting wheel to cut out the metal skin. You might want to clamp some plywood to the door to protect the area outside your line from an "accidental runaway grinder". I've done this before using a worm drive skilsaw and a metal blade. But you have to tape the bottom of the saw with duct tape so that the guide doesn't scratch the door all up.

Hopefully your door is foam filled, but if it's not you'd want to glue some wooden spacers inside the skin of the door so that the door does not pucker when you install the glass and tighten down the screws.

Thanks for the info, it was very helpful. I decided to buy the new door, but I will be cutting a dog door in that. So, I'll be using the cutting tool method to cut the steel either way.
Thanks again for the tips