hi,
u have a problem with 8080.isnt it?
8080 is the default port number of http.u must change the default to ur own number.
change the port number to 9900.
inorder to change,u have one file called server.xml.u have to change the port number in that file
In tomcat folder->conf->server.xml
Edit server.xml. Scroll till u get a tag <Connector port ="8080">;
U'll have so many Connector tags,but u must change the first Connector tag.change this to 9900 and save the file.now u can run http:\\localhost:9900 to check whether tomcat is working fine or not.