[THIN] 64-bit Windows 2008 and XenApp

Hi all,

Is anyone running 64-bit Windows 2008 with PS 4.5 or XenApp  or XenApp?
I need to upgrade my servers and I'm kind of debating whether to go 64-bit or 32-bit.
Mainly using: Microsoft Office, Acrobat, IE, Exceed, Tumbleweed Desktop Validator, ActivClient.

I don't want to buy 64-bit servers and find out the these apps. Don't work.

Thanks,

_______________________________
Hector Minero
NSWCDD K55