Drive setting

im not exactly sure why, but one of my harddrives seems off track
this is how my setup looks
c: harddrive
d: harddrive
f: harddrive
g: cdr/rw
h: dvd-rom
i: harddrive
i want to change the i: harddrive to e: and then that allow me to change the g: cdr/rw to i: giving me another spot for my other harddrive which i havent yet installed
how do i do this?
in disk management, i can change the cd drive letters but not the diskdrives...
can someone help?

 

Yes you can, well at least I can.

In disk management in the window above the graphic representation of your drives
Where it says volume | layout | Type | File System

Right click