just because this http://www.esreality.com/?a=post&id=1780303 has too much comments
here my suggestions

http://img682.imageshack.us/img682/5672/dm6items.jpg

http://www.filefront.com/14872645/dm6test.pk3

second version - added teleport
http://img137.imageshack.us/img137/1624/20091107233514197.jpg

exit
http://img137.imageshack.us/img137/999/20091107233526324.jpg

http://www.filefront.com/14880025/dm6test2.pk3

third version
added second teleport

http://img267.imageshack.us/i/20091108175231119.jpg/

http://www.filefront.com/14885229/dm6test3.pk3