If I understand you correctly, SP2 has been installed at some earlier time but it seems that Windows now needs some more files off the SP2 CD that were not installed with the earlier SP2 update. If that is the case, you can get an SP2 update CD from Microsoft here (the CD is free but there might be a charge for packing and postage): http://www.microsoft.com/windowsxp/downloa...us/default.mspx
However, it could be that Windows is asking for the retail "Windows XP with SP2" CD which you don't have and which has to be purchased, though it's now difficult to find as the stores are phasing out XP to make way for Vista. You may be able to borrow one from a friend just to get your language files installed. That's quite legal because you won't be using it to install Windows, all you need are some language support files from it.
Edited by pip22, 29 September 2007 - 09:02 AM.