syncing with a new install of itunes

[aljohn]

My iphone 3g is synced with itunes on my desktop, win xp pro- all OK. I've done a clean install of windows on another hard drive (I want to format the original once I've taken everythingI want off it.) The new install of itunes/hard drive will delete everything on my iphone if I sync with it - I'm told.Do I have to de-authorize the original itunes/drive then authorize the new itunes/drive to sync and not lose anything? Or is there a simpler way....?