OpenSUSE Install :: Starting Script At Login?

I had a question about starting scripts when my user logs into the system. The script is just a simple bash script that runs an infinite while loop that does a who | grep <USERNAME> and if it returns zero then executes a program and then exits the script. First I tried adding my script to the /etc/init.d dir but after login I could not find the script running anywhere using ps -ef and/or ps -aux. Then I tried adding the script into the /etc/init.d/rc*.d directories but also could not find it running. It wasn't until I decided to use the "Startup Applications" option in the "Control Center". So my question about that is, where does that application add those apps to so they start at login time? I could not find any "links", etc... for that script in any of those dirs?

Also, one other question. How do I create a user that I can use for SSH and su to if need be, but not have the option to login to that user at boot time. Before I created the other user, it would just automatically login to the my "everyday" user account, which is what I want. But now with the new user I get prompted to select which user I want to login in to.