My wife just called me at work, she went out to start the car and all she gets is a clicking sound. Lights, radio etc. OK until she turns the key, then just a clicking sound.

Should I pick up a battery on my way home?

Try giving it a boost. If it starts, check the charging system. Put a voltmeter across the battery terminals, and if the voltage is 14 volts, replace the battery. I gather from the year of the vehicle, the battery is probably the original one. Most batteries are good for 5 years.
Good luck.

Thanks!

checked and changed the battery this morning. All is now well!

If you continue to have problems with the battery, take it to your dealer and have them inspect your terminal wiring. I spent $300 replacing the battery and alternater ('98 LS) after the car died 3 times on me. I took it to the dealer and they had it fixed for $80.

Best of luck!