Change "Drive1=C", "Drive2= D" and "Drive3=I" if you want.
How to hide percent pointer, IP and Lan IP:
Open "Documents\Rainmeter\Skins\desktop03-dev"
Open "Variables.inc" in text editor and change
a) "PERhide" to "1" if you want to hide percent pointer,
b) "IPhide" to "1" if you want to hide IP,
c) "LANhide" to "1" if you want to hide Lan IP