By name:

tell application "System Events" to (name of processes) contains "iTunes"

By creator type, in case it might have a version # appended:

tell application "System Events" to (creator type of processes) contains "InDn"

Grab creator type dynamically like so:

tell application "Finder" to creator type of (selection as alias)

From http://applescriptsourcebook.com/viewtopic.php?pid=46830

By using this script to start lighttpd you can be sure you won't be leaving rogues dispatchers around sucking up memory and generally pissing jason off. Don't get caught with your pants down!

Make sure to change USERNAME below, as well as any paths that may be different in your case.

#!/usr/local/bin/ruby
#Modified from Julik's original code posted to TextDrive forums.

pstab = `ps axww`

def kill_fcgi_proc(line)
  its = line.strip.split(/\s+/)
  pid = its[0]
  puts "KILLING #{line}"
  `kill -9 #{pid}`
  sleep(3)
end

if pstab =~ /\/usr\/local\/sbin\/lighttpd -f/
  
  puts "Lighttpd still running."

else

  pstab.scan(/^.*dispatch\.fcgi\s*$/) do |line|
    kill_fcgi_proc line
  end

  pstab = `ps axww`
  
  if pstab =~ /dispatch\.fcgi/
    puts "Error, rogue dispatch.fcgi's still pissing jason off."
  else
    puts "Rogue dispatch.fcgi's cleared, starting lighty!"
    `/usr/local/sbin/lighttpd -f /home/USERNAME/lighttpd/lighttpd.conf`
  end
  
end