If the pygmy chams are the ones you are thinking about let me make a few points besides the fact that you will need a cage much larger. Most folks like to get chams b/c of their color changes, prehensile tail, googly eyes - hey, they are pretty cool! BUT the pygmies are generally brown/brown green, have short tails, change patterns but not color (just more shades of brown and, most important, I personally would not recommend them as a first time cham. (they do have googly eyes! 
I know everything we have said is probably discouraging and frustrating, but better to know now. You need to have the right space and researched the different species. Here are a few good sites to give you an idea of what they are all about. Btw, they are very high maintenance animals (and feeding them can get pricey.)
Chameleon News
This is a top source of current information compiled and written by “tops in their field.”
www.chameleonnews.com/
AdCham
www.adcham.com/
Chameleon Paradise – a site by one of our forum posters.
groups.msn.com/ChameleonParadise
Chameleon Journals www.chameleonjournals.com/
Reptayls – another site by a fellow KS poster
groups.msn.com/REPTAYLSChameleons
Of course, there are more but these are the most frequently recommended
Hope this is helpful for you!
lele & Luna
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0.1 veiled - Luna
0.2 green anoles Jaida & no name
0.1 brown anole - Jamaica
0.2 house geckos - Gaia & no name