I used to have a small system that just powered my laptop, ceiling fan, and 4 energy efficient (CFL) lights. That was an 105 W panel, 12 V 100 Ah battery, and 300 W inverter. It worked great, but I had to sell it last year. It cost me about N190,000 a few years ago. I bought all the parts and installed it with an electrician friend.
There is a good manual on how to do the installation is here: http://www.nigerdeltawetlands.org/settmanual.html But if you get a bigger system or have no electrical experience, better to get a professional installer. I hear rubitec solar (above) is good.
i am chinese solar panel manufacturer,if anyone want to know more about solar energy,or any one want to purchase,then you can reach me by : waijingmao2006@yahoo.com.cn or skype: luoping3000 I work in a solar company,so i know more about it.I am waiting for you !