after itunes is downloaed, it does not get installed to my PC/Window XP giving warnig that it is not win 32 file
There are a couple of articles that you may find useful. The first will address this specific issue, the second is general troubleshooting for installing iTunes in Windows.
iTunes: Windows reports that "iTunesSetup.exe is not a valid Win32 application"
Trouble installing iTunes or QuickTime for Windows
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