the missus and i both have iphones and we're syncing them from the same pc but itunes has just replaced all my contacts with hers then after 6 backups it finnaly merged them for me to delete the ones that werent mine now its just added a load of my contacts to hers when we plugged hers in do we need 2 seperate pcs so everytime we plug in we have to go through this

A Possible fix for this problem might be either creating a new User Account on your PC with a copy of the Music Library to sync one of the phones separately from each other to keep the contacts separate or turn of Automatic Syncing of Contacts everytime you Sync the Iphones to Itunes.

Easiest way to do it is to set it not sync contacts using iTunes.

If you set up a Google account for each of you and set up Google contacts you can both sync separately using Exchange:

http://www.google.com/support/mobile...40&topic=14252