I'm new, and totally excited to see how I can build up a mining rig to run 24/7 (hopefully with help from solar panels). Running on my spare PC right now, with an ATI 4850 doing about 80-82Mhash/s on BTCGuild. Overclocked the GPU to 725, underclocked Memory to 500 and it has been running steady for about 24 hours no hiccups.
My plan is to build a system with 3 or 4 ATI 5830's running (hopefully) about 300Mhash/s each when I move into my new place (I live in the boonies). I have already planned to invest in solar power for my home and was thinking of going the easy route (dubya dubya dubya clarianpower.com/solar.html) so I am not really worried about the electrical costs, as well as lighting costs due to the house using as much natural light as possible. I will probably have to use PCI-E extenders and build a custom case for the rig as well. I may have to use water cooling, but I am a total newb when it comes to that. That's pretty much it!