Maximum Displays/Monitors in a Virtual Machine & Update 5.0.0->5.5

Hi,

I am running into a Intel Server a VMware ESXi 5.0.0, 623860.

First Question - Max Display in one VM:

I am planning to move all the Windows XP VM to Windows 7 VM. I would like to set-up for Some Virtual Machines 6 Monitors (or 6 Displays).

What is the maximum number of display Can I set in one VM ? Actually, in the "Edit Settings" of Vmware Esxi I see only max 4 displays that could be set.

Second Question:

For Updating my ESXi Server from 5.0.0 to 5.5.0, I only have to download ESXi 5.5 Update 1 ISO image (Includes VMware Tools) ? and that's it?

many thanks for your support guys!