Jorn,
Been using pagesetter for a while now. Frank S. introduced me to it.. Great module.
Here is an idea you may want to look at:
Change line 875 in pnuserapi.php to the following:
$printThisHTML = "
" . _PGPRINTTHIS . "";
This allows the print page to be displayed in another window. Keeping the original web page in tact. Or, as Frank suggested, make it configurable..
Jim