Starting webserver fails

I'm trying to use TeamCity to build, deploy, startup a server, and run integration tests.  I've gotten past build and deploy, but starting the server isn't working.  When I login to the build agent machine manually and execute my script to start the server, everything works great.  When I execute that script as a Command Line build step, I can tell the script is executing and the build does succeed. However, the server isn't being started up.  Thoughts?