Trying to use applescript to launch cmd line 3 scripts in new tabs

Question

I'm trying to launch 3 tabs and run a script in each with applescript. So far I havent been able to get this done. Currently I have:

tell application "Terminal"
    activate
    do script "ping google.com"
    tell application "System Events"
        keystroke "t" using {command down}
        do script "ping yahoo.com"
    end tell
    tell application "System Events"
        keystroke "t" using {command down}
        do script "ping msn.com"
    end tell
end tell

This will launch 3 tabs but the pings don't execute in the last two tabs?

I'm probably missing something easy here.

Answer 1

1. "System Events" doesn't understand what you want to do with do script, use the do script command outside of the tell application "System Events" block.

2. You must specify a window or tab when using the do script command, otherwise a new window will open.

Updated (Lion) :

tell application "Terminal"
  activate
  do script "ping google.com"
  my makeTab()
  do script "ping yahoo.com" in tab 2 of front window
  my makeTab()
  do script "ping msn.com" in tab 3 of front window
end tell

on makeTab()
  tell application "System Events" to keystroke "t" using {command down}
  delay 0.2
end makeTab