I use the SE4Modder by DavidG for all my modding needs nowadays. You can use it to mod anything, with a GUI, as well as numerous other small but handy features. The only thing is that you have to edit everything manually, but I like the control
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O'Neill: I have something I want to confess you. The name's not Kirk. It's Skywalker. Luke Skywalker. -Stargate SG1