[b]No you can't convert or upgrade it.[/b] You need to purchase an English version of Vista DVD. Make a [b]clean install[/b] and that's it. Meaning you've got to fully format it as well before installation. Below are links on how to make a clean install of Vista. [b]Make a Clean Install of Vista:[/b] http://www.vistax64.com/tutorials/68767-clean-install.html [b]Useful References:[/b] http://www.timog.com/forum/archive/index.php/t-12257.html http://answers.yahoo.com/question/index?qid=20071004180816AA39e39 http://www.vistaheads.com/forums/microsoft-public-windows-vista-installation-setup/27809-upgrade-japanese-vista-business-us-ultimate.html

^ Nah, it's okay. It depends on what kind of installation you want. If you need help with the installation, please read the notes and tutorials below. You can format your drive and install XP, called [i]Clean Install[/i]. Which means all data would be loss, so make a backup of all your files. This installation is recommended if your PC hasn't been formatted in a long time. It's also recommened for systems with program issues and hardware issues. [b]Clean Install http://www.bootstrike.com/WinXP/cleaninstallxp.html[/b] A 2nd option is to [i]Upgrade / Install[/i]. This gives you the option to install a newer version of XP while keeping your files. Which means your files will be untouched and intact. You should be able to find them where they are originally located. [b]Upgrade / Install[/b] [i]Proceed to the part "Here's a general roadmap for performing..."[/i] [url=http://freepctech.com/pc/002/WindowsXP_upgradeinstalation.shtml][b]http://freepctech.com/pc/002/WindowsXP_upgradeinstalation.shtml[/b][/url] I usually do a clean install, since it's more reliable. My files are always backed up on another drive so its a lot easier.

^ You're most welcome.