These are some screenshoot of my OpenFire server configuration, I use this as an integrated service to communicate with all of my colleagues in my department. This way, we can share any update information in a more efficient and simple way :)

All you have to do is go to this website, then download the file specifically made for your system, then you'll enable two or more concurrent remote desktop connection to Windows XP Pro SP2 and SP3, as long as you have "fast user switching" active and you're not in a domain.

I need to add something here. This method allow you to be able to do remote desktop connection concurrently using different user account. If you want to use the same user account to concurrently remote desktop, that's another method and I'm not include it in this post :)

This was taken from here, do it for your own risks :)

1. Install update-manager-core if it is not already installed:
   

   sudo apt-get install update-manager-core

2. edit /etc/update-manager/release-upgrades and set Prompt=lts
   
    
3. Launch the upgrade tool:
   

   sudo do-release-upgrade --proposed

4. Follow the on-screen instructions.
5. At the end of the upgrade process you will be required to restart the server in order to boot into the new kernel. If you do not have access to the console of the system you are upgrading, you may need to edit /boot/grub/menu.lst and change the default boot kernel to the newly installed 10.04 kernel. If this step is not performed your server may attempt to boot into the 8.04 LTS kernel and will hang.