Welcome to the site! Its a good place to get chameleon information!
If you post a picture someone will be able to tell you what species.
You said..."What gets me is the fact I read about lights for a chameleon. However it is very hot here and I was wondering if a light was still needed"...the chameleon needs UVB light in order to produce vitamin D3 so that it can use the calcium in its body. It can either come from direct sunlight or from an appropriate UVB bulb. The UVB should not pass through glass or plastic. Failure to provide UVB leads to MBD...so its important.
You said..."Please tell me what else I can feed 'george'?"...I don't know what's available in S. A. but you can feed it superworms, silkworms, once in a while waxworms. You could feed it wild caught insects too, but there is always a risk of them picking up parasites from them....and you need to be careful that you don't use any that are toxic.
Gutloading/feeding your insects...its important to look after the insects well. You can feed crickets, roaches, superworms, etc. a wide variety of greens (dandelions, kale, collards, endive, escarole, etc.) and veggies (carrots, squash, sweet potato, sweet red pepper, zucchini, etc.).
Supplements...
Since many of the feeders used have a poor ratio of calcium to phos., its important to dust the insects before feeding them to the chameleon with a phos.-free calcium powder at most feedings.
I dust twice a month with a vitamin powder that contains a beta carotene source of vitamin A. Beta carotene (prOformed) source of vitamin A will not build up in the system like prEformed sources will. However, there is controversy as to whether all/any chameleons can convert the beta carotene, so some people give their chameleons a little bit of prEformed vitamin A once in a while. Excess prEformed vitamin A can interfere with the D3 and push the chameleon towards MBD...so don't overdo it.
If the chameleon is kept inside, then I would also dust with a phos.-free calcium/D3 powder twice a month to ensure that it has enough D3 to go along with what it produces from exposure to the UVB light on its cage.
Calcium, phos., D3 and vit. A are all players in bone health and in other systems in the chameleon and need to be in balance. When trying to balance them, you need to look at the supplements, what the insects are fed and what the chameleon eats.
Here are some sites that might help too...
http://adcham.com/
http://web.archive.org/web/20060502...rnals.com/vet/index.php?show=5.Vitamin.A.html
http://web.archive.org/web/20060421.../index.php?show=6.Vitamin.D3.and.Calcium.html
http://chameleonnews.com/?page=article&id=102
http://www.uvguide.co.uk/
Watering...