Help with dual monitor stand options for ST2410 and ST2310

I called Dell and was told that I should use a dual monitor stand from either Chief or Ergotron to use with my 2 new monitors, ST2410 and ST2310.  Both monitior stands have brackets that are meant to attach with 4 screws to the back of a monitor with 4 existing screw holes.  Both monitor stands will not work with either one of my new monitors.   Anyone that has these monitors knows that there is only a small 2" hole in the back and doesn't have any screw holes to attach a monitor stand bracket. 

Does anyone know if there are adaptor brackets that will allow these monitors to work with the standard monitor brackets?  Or, which Dell dual monitor stand can be used with these monitors?  I've given up on Dell Sales.  Both recommended monitor stands do not have brackets that will work with these monitors.

Any help would be appreciated.

Thanks!