Chuck,
This isn't a cheap hobby, even if you get the program free and I suggest you start no higher than Poser 7, you will need to purchase a model, the ones I use are from DAZ3D M4, V4 are my primary models they are free but to mold and shape them you will need to buy head and body morphs M is the male V is the female, and also the elite morphs for both, another you might want to look for is Apollo if you do a search for 3D Apollo you should find it it is a free male model that comes complete all morphs included. I believe he is going to make a female version of this character too. with out something like these you won't be able to duplicate your wife then there are the textures you can find those for free in the free section at Renderosity, some are very good some aren't. you will have to join Renderosity but that is free. Look at all the options at DAZ too they have a member section too that is free you just have to look a little harder and a thing called Platinum Membership that does cost but you get great prices in comparison to what these things cost normally. There you have all my secrets, but be prepared to spend money. If I were you, I'd probably start with DAZ Studio if its still free. its a little harder to manipulate for me but it is free, or was. I am not advertising for anyone, I have no affiliation, just letting you know where to go and what to look for, I hope that is ok
Red