>How can I control "Group Starts on" through code?
>I want user to select any of these 3 options
>
>"Group Starts on"
>1-New line
>2-New page
>3-New page number 1
>AND
>Reprint group header on each page.
>
>Thanks

Once you figure this out the implementation is simple. You would do something like:

use myTemplateReport.frx in 0 alias template
copy to tempDir\UserOption.frx 
use in template
use tempDir\UserOption.frx in 0 alias CurrentReport
replace ...
use in CurrentReport
report form tempDir\UserOption.frx to printer prompt preview