the file is in var/tuxbox some sats have to be renamed on the darkstarII 28.2 is 28.4 and thor 0.8 is 0.9
you can edit the file with notepad+++ the edited files should look like this.
<sat name="Thor 3/5/Intelsat 10-02 (0.9W)" flags="1" position="-9<sat name="Astra 2A/2B/2C/2D/Eurobird 1 (28.4E)" flags="1" position="284">">
you can download your own satellites.xml file from here
http://satellites-xml.eu/ just tick the satellites you want to view and rename them two.