There is a package called Thin Client Manager which from 7.04 should be installed by default. Unfortunately it does not in 8.10 so we must install it manually using the commands as follows (from the terminal). I thought I would produce a special post for this simply because the documentation is so hidden around the net

You could also use synaptic or the GUI frontend of apt-get for this, in case you’re not confident with the terminal.

Other common configuration steps

• Installing Macromedia Flash (note, from 7.04 the second step should not be needed)
• Installing x11vnc to allow screen-sharing in the thin client manager
• More features of the thin client manager
• Customising Thin Client behaviour
• General Maintenance of the LTSP server
• Installing Sugar (The OLPC XO Window Manager)
• Other FAQs & Tricks

Further sources of documentation:

• The Edubuntu Handbook

• The Ubuntu LTSP Wiki

• The LTSP Manual

• The Gentoo LTSP Guide