Morelia man,
Here is some info taken from a british website on how to keep crickets alive and well, I did come across a website regarding breeding them, but forgot the link, if I find it I will post it up for you.
This came from
www.livefoodshop.co.uk
BROWN HOUSE CRICKETS
(Acheta domestica)
House crickets should be kept between 75 to 85 degrees. When crickets arrive, empty out entire contents into larger container such as medium size plastic "Hagan" or small aquarium with plenty of ventilation. Place egg cartons around the walls of the container and chicken meal or cereal or for best results use one of the high calcium prepared insect foods (eg "bug Grub" or "Gut load" available from this site) on the base add a couple of pieces of carrot or potato, this will supply the crickets with moisture and vitamins found in fresh vegetables. It is essential to keep the container clean and free from damp. The smaller size crickets will require additional water either in a small container (coffee jar lid) with cotton wool to prevent drowning, (although you may find that this will encourage mites) or a few "Water Bites" available from this site (on the livefood pages) will give excellent results with the benefit of added calcium.
To clean: Shake the crickets off of the egg cartons and remove from container, use putty knife and scrape sides and bottom of container towards the center of the container. The live crickets will jump from this pile to the corners of the container. Remove debris from container, place egg cartons back in container, replace carrot or potato.
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BLACK FIELD CRICKETS
(Gryllus bimaculatus)
Field crickets are best kept between the temperatures 85 and 90 degrees although a localized heat source up to 95 degrees will be beneficial.
The basic care will be the same as for Brown House crickets although a slightly higher ratio of protien is required. fish food or dry dog food should be used in a 50/50 mix with cereal based feeds.
I think that once you have sorted out how to keep them alive, they are probably like mice and will produce like rabbits! LOL!
Neil
NCHERPS