I bought a compaq laptop presario 2100 with a sweden version of windows xp how can I change it to english vers

my laptop is compaq presario 2100 I bought it from Sweden I want to change windows xp home edition from sweden language to english languageI bought a compaq laptop presario 2100 with a sweden version of windows xp how can I change it to english vers
THE ONLY WAY I CAN THINK IS TO REINSTALL YOUR OPERATING SYSTEM DISC TO SELECT ALL LANGUAGES OR SELECT ENGLISH DURING INSTALL.IF YOU DO NOT HAVE YOUR OPERATING SYSTEM DISC YOU WILL HAVE TO CONTACT COMPAC/HEWLETT-PACKARD TO SEE IF YOU CAN GET AN OPERATING SYSTEM DISC FOR IT.GOOD LUCK