How to make applications start on Ubuntu startup

I just wanted to open firefox whenever I start the Ubuntu. It is little different then window operating system. I am showing here how you can add firefox to launch whenever we start the Ubuntu. Step 1 : From Dash open "Startup Applications" like below: [caption id="attachment_1299" align="alignnone" width="300"] ubuntu - start application[/caption] Step 2 : On "Startup Applications" popup click "Add" button, which allow you to enter "Name", "command" and "comments". [caption id="attachment_1300" align="alignnone" width="300"] ubuntu - start firfox[/caption] Step 3 : In command you need to add command associated with that applications, for example Mozilla firefox it is "firefox", alternatively you can click "Browse..." and navigate to the file and select the correct one. Fill the rest values and click "Add" button. [caption id="attachment_1302" align="alignnone" width="300"] ubuntu - start up Programme[/caption] Step 4 : Now if you restart the system it will open the firefox as soon as system start. My environment: Ubuntu 12.10 [si-contact-form form='1']