moving exchange files

i have a server running NT4.0 and Exchange 5.5…. The c: drive is partitioned to 650 megs there is a d: drive with 13gigs. the c drive is almost full. ran the exchange optimizer and let it move files to the e drive. is there a way to check and see where exchange is saving all the mailboxes and info to and if so how can i move it to the e drive without messing up the configuration???