Board Thread:Questions and Answers/@comment-76.89.207.145-20130209052634/@comment-6024139-20130209151029

I'm assuming this is for Windows.

Download and install Java Runtime Enviroment.

Choose between Tekkit Classic and Tekkit Lite. Download, extract and run either one of them.

Done.

You can make adjustments in the config files and add yourself as an admin in the ops.txt file.