mike_s, thanks for the reply. My car hasn't shown any problems, but i will keep the driving to a minimum till i fix it.
Between, if you are looking for spark plugs for your car, the following link offers a great price:
PLFR5A-11 SPARK PLUGS FOR MANY NISSAN APPLICATIONS: eBay Motors (item 320590051600 end time Oct-13-10 08:54:14 PDT)