To me these steps are looking fine, did you change the serverport for tomcat? as by default turnkey tomcat runs on 8400 and youare using 8080? another thing is context root is "/blaseds", itmight be a typo just wanted to make sure though. because I get thiserror when either my server is not running ...

Could you tell me what specific problem are you getting withtomcat installation? I am not a guru but may be I can help you outwith running simple blazeDS application.If you have tomcat installed just put blazeds.war file into/webapps directory, and while creating flex project check "useremote object...