Problem with hard drive sata detection vista

Hello,
I've installed Vista RTM.
I have 2 hard drive with 2 partition on both
I recently change the size of the partitions for the SATA hard drive (the
other one is IDE)
My problem is that the SATA hard drive is well detected (i can see it in the
hard drive of hardware management of panel control) but vista tell me that it
have detected new hardware and ask if i want to look for a driver, a solution
to the problem after that...) The result of all of that is that i have lost
my f and g disk in Windows explorer
Is there anybody with a solution for me?
for informaion the sata hard drive is a seagate 160go
Thanks to all