having prob sync iphone

[amorphous]

just did clean install of harddrive on my pc and reinstalled itunes etc but i want to upload a movie to my ipod so i can watch it on the plane. but when i go to sync up it says

the iphone 'iphone' is synced with another itunes libary. do you want to erase this ipone and sync with this itunes libary?

obviously i dont want to do this as i have all my music etc etc on there i will loose it. is there anyway to sync with new itunes with loosing all my stuff on my iphone?

cheers

 

[amorphous]

actually managed to recover itunes directory, how would i go about replace the itunes.xml?