If you have an old version of BB on F: you can rename F:\bb to F:\bb_old
then create a new folder bb
go to H:\bb and select all files in that folder
then using Ctrl + click deselect Drums and RealTracks
now Copy the selected files & folders
got to F:\bb and paste
delete your current BB 64 32 shortcuts
in the F:\bb folder right click bbw64.exe and bbw.exe > Send to Desktop create shortcut.
When you run them set the Drums and RealTracks folder to the H:\ drive.
File > File Utilities... > Associate file types...