dynamic number of fields on module pool screen.

Hello,

I wish to create a dynamic module poll screen..

the scenario is like :
on screen 1. I will choose some fields.

Based on the chosen fields I wish to develop screen 2 where all the fields from screen 1 appear as select options and a text field corresponding to each select option.

selOpt 1                     TxtFld 1
selOpt 2                     TxtFld 2

.

.

.

.

selOpt n                      TxtFld n.

the database selection will then be passed to Screen1 back.

is it possible ? any leads to achieve this ?

Thanks.

Regards.
Praveen Nenawa