First the launcher has to be downloaded at the technic website.
https://www.technicpack.net/
After that search for "The 1.7.10 Pack", it should look like that.
Once that is installed the pack can be ran. Go to multiplayer after it loads. It can take a few minutes to load.
In the multiplayer window there is a spot to add a server or connect to an IP use the address below in either spot to connect.
The address to the server is mod-mc.xtremeidiots.net
The server is currently whitelisted so we will have to add the name of the player that is wanting to connect.