Basic script help needed

Hi there,
Im really pretty new to MK but I could use with some help trying to create a script that (on startup/reboot) the script disables ethernet 2 for 3 minutes and then enables it.

thanks

http://wiki.mikrotik.com/wiki/Manual:Scripting

Assuming name of ‘ether2’ for the port, in Winbox click on System > Scheduler. Click the + button to add a scheduled event. Leave the start date as something in the past, click the drop down for start time and select ‘startup’. Paste the following into the ‘on event’ text box that contains the commands to run:

/interface disabled [/interface find name="ether2"]; :delay 180; /interface enable [/interface find name="ether2"];

Thank you!