Installing XLPublish is really straight-forward. Just follow the steps below and you'll be running within 2 minutes.
Since it is simply an Excel file, you should be able to install it without the help of your IT department.

1. Open the ZIP file that you just downloaded
2. Extract all files to your hard drive or network folder
3. Right-click the 'XLPublish.xlam' file to open properties
4. Check the 'Unblock' checkbox and apply
5. Double-click the 'XLPublish.xlam' file
6. Wait for Excel to open...
7. Fill in the XLPublish registration form