Firstly, be careful about what you're told, yes peeps make money from Poser including me but it isn't a lot and in my case never will replace my day job because it doesn't pay enough. Some can make a lot, most don't!

I do covers for 2 publishers but when they want my work is hit and miss, fairly regular but not spectacular amounts of work.
I think if you want to make lots with it you may be better going down the selling content route rather than doing artwork which means learning modelling and or texturing!
Just my opinion, nothing more!

Injustice will be avenged.
Cofiwch Dryweryn.