You cannot open 03 head lights. Only way to do the mod is to either purchase a set of headlights from a 2000 to 2002 X5 and do the install yourself or send them away to one of these guys
http://www.miautodesign.com
http://www.umnitza.com/
http://customangeleyes.com/
Some of them actually sell complete head light units with angel eyes installed.