|Depends on which folder you are talking about. |
The simple answer would be to backup the files and uninstall itunes then re-install to the place you want it to be if it allows that.
Can mount D as a folder some place in C drive. The Itunes folder could then appear as a folder in C:\ somewhere.
1/3 of highway deaths are caused by drunks. The rest are by people who can't drive any better than a drunk.