For each application the user wants linked to the taskbar, simply add the path to the application's .desktop file as illustrated by the 3 apps in the script. The order of the apps on this list will determine the order on the taskbar.
Put @tint2 in /etc/xdg/lxsession/LXDE/autostart.
To put lxmenu (the main menu) on tint2, first creat a simple shell script as in the picture on the right. Call it lxmenu.sh, and put it in
~/Programs. Finally, use lxmed to create a .desktop file with exec=~/Programs/lxmenu.sh and then put it on the tint2 panel as described in 6 above.
See tint2 wiki for general configuration information.