Hi Ken,
This is a fairly straight forward process
From Exchange System Manager | right click properties on the Information store you wish to move | click on the database tab | Now click browse for Exchange database and browse to the location/drive where you now want this information store to be located. Repeat this process for the Exchange streaming database. Click Ok or Apply.
A warning message will be displayed stating that this information store will of offline for the move process. You are fairly right with a 6 GB Information Store it should not take too long to move.
You might also want to check that your transaction log files are not located on this drive also, if so then right click on the relevant storage group and repeat the process for the Transaction log location.
Regards and good luck.
Ben Hoffman
Microsoft MVP - Windows Server System Exchange