Issue install .NET3.5 in Windows Server 2012

Using windows server add role feature to install .net3.5 framework in server 2012 has an issue in one of the wizard steps as it prompt me:
Do you need to specify an alternate source path?...missing source file on destination

weird...seems like a defeat in the wizard.

Solution is to use the CD with command prompt to execute it.
Insert the windows server 2012 disk into CDrom, example (d:)

Type following command in command prompt:
dism /online /enable-feature /featurename:NetFX3 /all /Source:d:\sources\sxs /LimitAccess

This solved my problem.

Firewall Port Requirements for CRM 2011

Some useful information for enterprise level environment installation.
List of ports to be enabled in firewall before running your CRM2011 installer.

Download the full requirement below.
Download

Solution for duplicate UUID issue with vhd images [VirtualBox]

The latest CRM2011 required 64bits environment, with my Window 7 laptop, the alternate method is the use the Virtual Box.

Face a common issue after I tried to copy an image to from hard disk and boot with another machine. Keep on prompting me "Duplicate UUID issue with vhd images". If you guys face the same problem as me, try to look for your VBoxManage.exe file location.

then type in command prompt:

VBoxManage internalcommands sethduuid J:\VPC\yourvhdname.vhd

It will generate a new id for that vhd, thus problem solved!