When updating Precision, if you uninstall it you will loose the 400 series skins.  However there is a way to retrieve them. 

Step 1.  Remove the updated precision.

Step 2.  Install the precision from the CD.

Step 3. In the precsion folder you should see the skins

Step 4. Copy these to a safe location

Step 5. Remove the old Precision.

Step 6.  Install the new version.

Step 7.  Place the files back in the skins folder.

Step 8.  Reselect the skin for the 470/480.

Please note this is note this is not needed with when updating from newer versions of precison.