1) Open the Drive Bender Manager and select the Drive dashboard.
2) Show advanced settings.
3) Select Map drive letter and the pick a drive letter from the list.
Note - To remove the drive letter at a later date, follow the same step (the Map drive letter option will be Remove drive letter).
Alternatively you can map the drive via Windows Disk Management. Using the Windows Disk Management console (start menu, type "diskmgmt.msc"), find the drive in the list of drives available on the system. Right-click the drive and select "Change Drive Letter and Paths", and add a drive letter to the drive.