How do i change default language from japanese to english?

my location is in japan. i bought my pc here but the language is in japanese.unless i change it to english i won't be able to maximize it's features. and please tell me if there will be disadvantages should i do that.How do i change default language from japanese to english?
See if this helps:



http://www.microsoft.com/globaldev/refer



Good LuckHow do i change default language from japanese to english?
you just press view IN THE INTERNET and press encoding

and wazzzzzzzzzzzzzzzaaaaaaaaaaaaaaaaaaaaaaa?finish dude

now will you give mi 10 piont's
move..