How do install GNOME and VNC on my newly purchased unmanaged VPS hosting?

Hello,

I just order an unmanaged VPS hosting for a gaming server (ragnarok online) that I want to run on it. I'm currently a novice at Ubuntu Linux which is the OS for the VPS server I order.

I would like to know a couple of things.
1) How do you open and edit a text file through the terminal window? I'm currently connected to the server through puTTy and trying to open this file and edit it "/etc/apt/sources.list" so I can enable universal repositories and install things. I'm not so sure about this.
2) After I edit this file to enable universal repositories, I want to install GNOME. I read somewhere that you need to enter this command in the terminal window.
sudo apt-get install ubuntu-desktop
Is this the right command?
3) Once I finish installing GNOME, I like to install VNC (remote desktop). I already have VNC viewer on my laptop. Now I only have to install VNC server on the server. I read somewhere that the command to do this is:
sudo apt-get install x11vnc vnc-java
Is this right? Then I have to do this:
       2. Set up a password for clients. Code: x11vnc -storepasswd
       3. Open up ports 5800 and 5900 on your firewall
       4. Run the terminal command: x11vnc -forever -usepw -httpdir /usr/share/vnc-java/ -httpport 5800 and add it for auto-starting in future sessions
Are these the right steps for installing VNC on the server?
4) After I install both of these software, am I set to start installing and running my gaming server? Or is there any other small things I have to do? Remind you, this is a newly Ubuntu server 32 bit with nothing besides Apache and the setup files.

I greatly appreciate anyone's help.
HeavenWingsAsked:
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Fabio MarzoccaFreelancerCommented:
1) sudo nano /etc/apt/sources.list

2) yes

3) too many questions... :-)
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HeavenWingsAuthor Commented:
When I type in the command you provided it gives me this:
sudo: nano: command not found
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Fabio MarzoccaFreelancerCommented:
you need to install nano:

sudo apt-.get install nano
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HeavenWingsAuthor Commented:
Are you sure its sudo apt-.get install nano or is it without the period before get?

I tried your command and it said command not found.

I tried without the period before get and it gives me this:
root@xx-xx-xxx-xx:~# sudo apt-get install nano
Reading package lists... Done
Building dependency tree... Done
E: Couldn't find package nano
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Fabio MarzoccaFreelancerCommented:
it is without the period, of course.
If you have a standard ubuntu installation, nano is in the repositories:

sudo apt-get install nano

You can check it is there from here:
http://packages.ubuntu.com/jaunty/nano

What version of ubuntu you have installed?
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HeavenWingsAuthor Commented:
Ubuntu 9.04

I read somewhere that I need to enable universal repositories before installing anything. That's why I asked my first question.
1) How do you open and edit a text file through the terminal window? I'm currently connected to the server through puTTy and trying to open this file and edit it "/etc/apt/sources.list" so I can enable universal repositories and install things. I'm not so sure about this.

Don't I have to edit /etc/apt/sources.list to enable it so I can install nano?
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Fabio MarzoccaFreelancerCommented:
No. Nano is in main repositories.
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HeavenWingsAuthor Commented:
So why can't it find the package? And how do I make it find the package?
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Fabio MarzoccaFreelancerCommented:
Before trying to install, refresh the cache.

sudo apt-get update

Then install.
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HeavenWingsAuthor Commented:
Excellent. GNOME is not installing. Sweet. Thanks for helping me.

Could someone answer my other questions. Questions 3 and 4.

Thank you.
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Fabio MarzoccaFreelancerCommented:
I think it is better you open another question specific to VNC.
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HeavenWingsAuthor Commented:
Smart thinking. Thanks for the help. Greatly appreciate it.
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HeavenWingsAuthor Commented:
His answers was very accurate and understandable. Thank you again for your support.
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HeavenWingsAuthor Commented:
Hi again,

how do I install vnc on ubuntu?
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