As requested, here it is. If you are not familar with canning procedures, please check out this site to learn everything you need to know. 
Fresh PreservingZUCCHINI RELISH  
Ingredients:
8 cups chopped zucchini   (approx. 10-12 med)
4 cups chopped onion       (approx.  4 -5 med)
2 cups  chopped sweet  green peppers
2 cups  chopped  sweet  red  or  yellow peppers   ( I used one cup of each)
8 TBS salt  8 tsp celery seed
7 cups sugar  4 tsp mustard seed
4 cups cider vinegar
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Combine zucchini, onion,   green , red and yellow peppers.  Sprinkle with salt.
Cover with cold water.  Let stand for 2 hours.  Drain veggies,  pressing out
liquid.  Combine remaining ingredients in a stock pot and bring to a boil.
Add veggies and simmer for 10 minutes.   Pour hot into hot jars ,  (following
water  bath method of canning rules)   leaving 1/4 inch of headspace.  Process 10 min in  the  boiling water bath.   Makes  about  8 pints.