How can I fix my Zanussi Dishwasher Model DW907?

I am replacing the dishwasher wheel supports.
I successfully managed to replace three of these.
However when removing the forth support the internal plastic part which it was screwed into dropped down inside the panel of the dishwasher.
This is the inner dishwasher wheel support on the right side looking from the front of the dishwasher.
Is there any way of recovering this from the bottom right hand side of the dishwasher?
Is it possible to remove the bottom front panel to get access?
Is it possible to get access after removing the filters in the bottom of the dishwasher?
Is it possible that it will have dropped through onto the floor? hence pulling the dishwasher out may be the solution
Please advise an early reply will be appreciated

Tony
January 2011