How To Install Solver in Excel 2007
Determining if Solver is installed:
To determine if Solver is installed in Excel 2007, click the "Data"
tab on the top menu bar and see if the Solver
menu item appears on the upper right side:

If the solver menu item does not appear, you will need to
install the Solver add-in.
Installing the Solver Add-in:
- Click the large circular Office button on the upper left
corner of Excel to bring down the menu.
- At the bottom of the menu, click the button that says "Excel
Options"

- Click on "Add-ins" on the left side of the windows that pops
up.
- At the bottom of the window, where it says "Manage:",
be sure that "Excel Add-ins"
is selected. Click the "Go..."
button.

- In the "Add-ins"
windows that pops up, be sure to select the "Solver
Add-in". Click the "Ok"
button to install the Solver add-in.

- The installation process may ask you to confirm the
installation and will take several minutes to complete. The
Solver menu item
should then appear in the Data
tab as described above.