220 > 110 voltage converter?

Just ordered my mpc 3000 and want to buy a voltage converter (from us 220 to european 110). what am i looking for in a converter like that? and how much watts does the mpc3k need?

Thanks

I bought this one for my 60:

http://i17.ebayimg.com/07/i/000/b1/37/c752_2.JPG

http://cgi.ebay.nl/Converter-220-volt-t ... er-supply-)_W0QQitemZ130174196887QQcmdZViewItem

Simpel 220 to 110 converter 45 watt

i bought it new for 12,50 euro
You can get it at your local electro shop !