Thiago - How can I use a Linux UI on EC2? Do I need VNC?
Hi!
Yes you can, just make sure your are using a AMI with desktop UI applications installed on it...
But, instead of using VNC, use the NX client / server solution. It is much better and it uses a secure connection through SSH! It is like a VPN...
Nomachine / NX:
http://www.nomachine.com/download.php Also, if you want purely open source free software, you can install X2GO...
http://www.x2go.org/index.php?id=7 Which is based on NX too.
Never use VNC!!

Best,
Thiago