You would plug it into a USB port on your PC. I can't really advise how long it would take to charge but my daughter has an ipod thingy that takes about 30 mins.
...but Chuck I am so glad you've posted this. I have this and find it to be so useful and wanted to tell AOG about it but didn't know what to call it or how to explain it. (see I told you I read all your posts. :-) )