http://cgi.ebay.ca/power-adapter-converter-12-volts-0-3AMP-class2-AC-DC-NR_W0QQitemZ330313196270QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item330313196270&_trksid=p3286.c0.m14&_trkparms=72%3A1215%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318
Hopefully this works. This is what you need.
The easiest method is to find an old used wall plug adaptor for somehting you have laying around. This could be an old cell phone charger, aswering machine adapter, flash light charger, etc. Basically a small box type of wall plug in. Hopefully you know what I mean, it basically cuts the 110V...