Shoot, I still haven't grabbed anything to eat for dinner yet either. One last time:
10 PM or bust.
For setup, go download the launcher from here:
http://www.technicpack.net/download/
Or this should also be a direct download of the Mac version:
http://mirror.technicpack.net/files/...uncher-OSX.zip
Unzip the download, and launch the app. In a few seconds, you'll get something like what I posted on the previous page. Select "Tekkit" from the graphical menu in the top left corner.
In the bottom right corner, enter your Minecraft credentials and hit login.
The Tekkit mods should auto-download and install.
Once you've launched, it should look a lot like normal Minecraft, like this:
Now you should go download my textures and install
per this post.
Go poke around in single-player mode for a few minutes to get a brief feel of what's different.
REMOVING MODS:
I've encountered some problems with one of the included mods: MAtmos. This mod adds ambient sounds to the game, but the problem I've experienced is that eventually normal sounds stop playing. This is only a mild nuisance when doors or chests stop making sounds, but it's a real problem when you can't hear the creeper sneaking up behind you or the spider that's about to drop on your head. To remove MAtmos, go here:
~/Library/Application Support/techniclauncher/tekkit/mods/
And delete (or move out of that folder) the file called
MAtmos_packaged.zip.