Form A - pass data > Form B

[Rich]

Here is what I am attempting to do:

Open Form B from Form A via command button.

Form A contains Master (EnvID) data in a "form', but the
Child (ID) data is on a subform as a "datasheet" (Master-
Child is represented as: EnvID <-->ID). I would like to
pass both the EnvID and its child (ID) in order to
retrieve all of its children. In form B, the son and its
children are displayed.

Any advice is greatly appreciated. Thanks in advance!

Rich