[quote=Redfor;79993]If I remember correctly, if you have the "update contacts " checked it will give you some sort of warning and then give you the option of Replace or Merge. Select merge and you should be fine. I sync mine with multiple computers all the time.
I also have my iTunes on all computers checked to NOT automaticly sync the iPhone once you put it in the cradle to make sure it doesnt erase anything in case you forget. Just remember to Uncheck all selections such as photos, music, video, movies etc.. otherwise it Will erase everything. My work computer only has the contacts selected.
Hope that helps answer your questions

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So, you have been syncing you iPhone with mutiple computer, PCs? It places you contacts on the second computer? How about the calender? I have mine synced at home, but would like to be able to sync it at work for the calender and contacs. Thanks.
Craig