Repartitioning a Caviar Green 1,5 TB in Win XP

I have repartitioning my wd hd (internal Caviar Green 1,5 TB but in a usb-chassi) in Win XP, and now I don’t think it is working correct (it is slow and many files are corrupt after copied to the drive).

Today I found this page:
http://wdc.custhelp.com/app/answers/detail/a_id/3876/related/1
And it says that “Western Digital recommends not repartitioning your drive on the Windows XP”.

But what should I do now? I have one computer with Win XP and one with Win 7. Should I repartitioning the hd again but from Win 7 instead, or should I run the WD Quick Formatter Utility or maybe run the WD Align?

Help wanted!

Run the WD DLG application before repartioning your drive again.

http://support.wdc.com/product/download.asp?groupid=616&sid=3&lang=en