bmvstager is a utility to stage data into a blue marble 5551 database format.  It take a 
--land-database argument that specifies the location of the blue marble viewer data base.  
So if /data/Land/0
                /1
                 :
                 :

is the location of your data then 

bmvstager --land-database /data/Land 

Is the proper format to specify where the data base is located.  After that you can specify any number of images to put into the database:

bmvstager --land-database /data/Land  <path and filename 1> <path and filename 2> ..........

Note: you should stage same resolutional data at a time.  So if you have a .5 meter data set and alsoa have some 1 meter you should stage the 1 meter and then stage the .5 meter.
This is also tru for mosaics.  If you have a mosaic of Florida and a Mosaic of California then stage Florida or California first and then stage the other.