Do MacBook Early 2009 Model support Windows 7 64-bit mode

I have a MacBook While 13', Early 2009 Model [http://support.apple.com/kb/SP504 ]

I was using Leopard till date, with Windows XP.

I am planning to upgrade my Mac OS X to Snow Leopard, and Windows XP to Windows 7.

But, this article [ http://support.apple.com/kb/ht1846 ] mention that Widows 7 (with 64-bit) can't be installed on my MacBook.

Is it so?

Can I install Windows 7 with 32-bit, or I have settle with Windows XP or Vista only.