Elizabeth,
First congrats on your 'emergency' - my kribs are still at the nesting stage and haven't started laying yet.
Here is some info on krib breeding and care that I got from another site:
Once the pair have nested it will take somewhere between two to three weeks before the eggs are laid. (The female can get cranky and may give the male a poke or two). Kribs can lay between 10 and very rarely upto 250 eggs with a color ranging from yellow to dirty orange. It is not uncommon for the Kribs to lay the eggs on the roof of the nesting site, but this is not always the case. The eggs will hatch in 3-8 days; many fry will still have their shells stuck to them (used as part of the yolk sac), as they wiggle on the gravel. The female will come out for food once in a while, and the male will then take over until she gets back.
I have experienced cases where the male or female will keep one of the parents away from the nesting site. This seems to happen when there are very few or no other fish in the tank. Maybe Kribs instinctively feel the need to protect their fry, thus with no predators, they may divert their attention to each other? If this becomes a problem, try adding some dither/target fish; if the aquarium is under 20G it may be necessary to temporarily remove one of them.
The parents may move the fry (using their mouths) to another location or decide to raise the fry on the spot. When I first saw them do this, I cringed and thought they had decided to have a snack! A nesting site that has little or no gravel/inadequate cover can cause them to move the fry to a location that has gravel and offers some protection.
The fry will continue roaming around the gravel and occassionally make a leap or attempt a qucik swim. They usually follow the female or male like a magnet when out of the nest site. The parents may move the fry to a cave or better secluded location at night. They will become free-swimming in 5-10 days.
It is a good idea to keep the water clean (remember:Kribs are river fish), keep the other fish, as well as the parents, well fed (for obvious reasons), and even keep a small night-light on to help the parents protect the fry at night. Do not gravel vacuum near the nesting site, it will only stress the parents and fry, and eradicate an important food source of algae and infusoria. Gravel vacuums are usually attacked without hesitation.
Once they are free swimming they can be fed with any of the commercially available foods. Pulverized/finely broken flakes work well; the parents will also help in feeding by spitting out pieces of food. The fry grow fast and feed well off of baby shrimp nauplii after one week of free swimming. The fry can be fed many times daily in very small amounts. It will not be uncommon to see the parents herding and 'presenting' the fry around the tank while they look for food.
There are two basic options after this : remove the fry, or let them take their chances. After 2 to 4 weeks, once the fry are appr. 1/2 inches or more, it is a good idea to remove them or they will most likely get eaten or killed. At this point, the parents are beginning a new mating cycle, and will become aggressive even toward their own fry. It is very possible that some fry will survive - there are accounts of first generation fry even being allowed to help raise second generation! fry (this can be a common occurrence with Lamprologus Brichardi) But more often than not, they will attempt to eat the new fry. There is no real way to prevent spawning. If spawning becomes a tedious affair, take out the eggs! It's unfair, maybe cruel, but it's easy and it works. A ploy I often use is feeding the fry to other fish.
Hope this helps, and keep us informed of your progress.
Cheers, Eddie
, who I had no idea was expecting, about 10 minutes ago gave birth to loads and loads of fry. I'm so excited as I've never had babies before, but I'm also totally unprepared. 
