Operator Whale

ok so i started up a server with a friend of mine and it worked and we couldn't spawn anything from the tekkit classic mod list. we are on tekkit classic wiht minecraft version 1.2.5 . we realized none of the mods were not in the server. After some research i found out that i had to launch the tekkit jar file. However thats what i did to make the server in the first place.So i need some help.