Hi Dave -
Since you mention "new to electrics" you might not want to convert a PC power supply, although they do work well for powering our battery chargers.
For an off-the-shelf solution, a power supply such as this one from Radio Shack will do the job:
http://www.radioshack.com/product/in...ductId=2103960
It's more than you need for the Accucell 6, but you'll never regret having more capacity than you presently need.
For a lower cost solution, this Pyramid power supply would also work:
http://radioproshop.com/pyramid-ps/ps8kx.htm
Good luck!
- Jeff