Just whack the plug off and fit a new one to it -- Home Depot sells replacement plugs. I also like @
FliesWay2Much's idea of just tossing a travel adapter on it and calling it a day.
As far as the bulbs go, if you're using incandescent bulbs, you'll get ~40% of the original brightness using them on 110v. No problem. It's trying to run 110v bulbs on 240v power which causes exciting things to happen.
If anything, because of the lower power usage, these bulbs will last a very long time, possibly indefinitely.