How to force a new browser page?

I'm working on an intranet accounting application using php and posgresql. When I select a reord from a list for editing, I transfer the necessary variables using the 'METHOD=POST' and similarly when the update scripts are run after the edit. It makes no sense to use the back buuton to return to the original list so I would prefer to open the other pages in new windows. How please? If a web developers list is more appropriate for this question kindly recommend one. Thanks Bob Parker