Indeed, the "K" version is a Korean localization, though it can be achieved through tweaking the OS manually.
Download the correct language pack, and change the localization.http://windows.microsoft.com/en-us/windows/language-packs#lptabs=xphttp://support.microsoft.com/kb/922474
Changes to the Windows registry
The K versions of Windows XP contain the following registry subkey:
The following registry entries are associated with this subkey:
Value name: KWeblinks
Value type: REG_DWORD
Value data: 0
These registry entries are used to identify Windows XP K SKUs. When it is present, the KWebLinks=dword:0 registry entry identifies the Windows XP operating system as a K version.
Note In earlier versions of Windows XP, the KWebLinks=dword registry entry is not present, or the registry entry is set to a value of 1.