Oy, lets see here.

Windows Vista RC1 (Desktop)
Windows Vista RC1 (Laptop)
Windows Vista Beta 2 (Desktop)
XP Home SP2 (Desktop) -> Just ordered a replacement, XP MCE SP2 with Vista Home Premium Upgrade Coupon.
XP Pro SP2 (Desktop)
XP Pro SP2 (Laptop)
Windows Server 2003 R2 Standard (Testing SQL Server and MSDN ISO's)
XP Pro SP2 (VPC2007)
Longhorn Server 5600 (VPC2007)

I think thats everything. I decided to forego Vista RC2 on the RC1 machines (my personal machines) becuase of all the problems I have heard about, and they wouldn't upgrade from RC1.