1. Use above link to download and extract the GMod SVN Updater.
2. Run the program (it will do a small update with only takes seconds.)
3. On the left side of the program select PHX Pack under models, and select all of Wiremod.
4. Use the browse button to choose the directory to your Garry's Mod addon folder.
5. Click the Download/Update button to download and install.
With this program you can also download various other fun and useful addons including Smartsnap, Stargate, and Spacebuild 3.
