Rautor the open source windows Session Recording software

Rautor takes periodic screendumps of your users' sessions, scrapes each screenshot of its textual context and logs the keyboard too.

Optionally it can upload all that on an ftp server. SSL FTP is available in the commercial version.
It has the ability to be triggered only when certain windows appear on the terminal, making it perfect for a PCI/DSS monitoring solution.
Rautor can force a log off wen the legal warning is enabled and the user does not accept it.

You can download Rautor's setup program from Sourceforge

For instructions you have an option for the system's documentation in English or in in Greek!
For the tinkerers among you here is the technical documentation which also contains some security precautions.

The light version of RautorViewer. It only supports replay from locally saved sessions

The full Featered viewer or MultiViewer

For a demo of the capabilities of MultiViewer open the menu File->Session from remote server->Connection and add a connection as follows:

Server: www.unix.gr
user: rautordemo
pass: rautordemo

Try the search option by looking for the word "text", and then checkout the size of the screen scraper files :-)