Hi Héctor

VFPA? Visual FoxPro Advanced. A nice men from abroad is fixing the odd old bugs out of VFP. He's a geek fixing it in Assembler. Runs stable, no threads known so far.
http://www.baiyujia.com/vfpadvanced/f_vfpa_about.asp
Downloadable on this very site.
For me mostly it fixes the DPI problem and runs a decent printer dialogue.

The Monitor. Yess, this is because VFP looks on the DPI settings on the (main) monitor. This is used to render the report. VFP scales it the wrong way - harm done. What and where exactly is misplaced I have no idea, it least it's related.

If you have problems with printer and reports, make sure to have turned off the Printer environment (in the Report menu).
There is a way to store restore printer settings for later use, in a way that let the user store it's setting without dealing with the Reportdesigner.
Anway, I had never problems with REPORT FORM .. PROMPT, and I do SET REPORTBEHAVIOR 90 as long as VFP9 is available.
Be carefull with REPORTBEHAVIOUR 90, check the output, it renders text a bit longer, results may be cutted off.

To set the printer in VFP9 with a halfway modern OS you need something like

 TRY
   IF VERSION(5)<1000;
     AND VAL(OS(3))*100+VAL(OS(4))>=600 THEN
*VFP 9 (I do not use anything below 9)
    lcPrinter = GETPRINTER()
    IF !EMPTY(m.lcPrinter) THEN
     SET PRINTER TO NAME (m.lcPrinter)
     =SYS(1037)

    ENDIF &&!EMPTY(m.lcPrinter)
 
   ELSE &&VERSION(5)><10 AND VAL(OS(3))*100+VAL(OS(4))>=600
*VFPA
    =SYS(1037)
 
   ENDIF &&VERSION(5)><10 AND VAL(OS(3))*100+VAL(OS(4))>=600
 
   llError = .F.
  CATCH TO loException WHEN m.loException.ERRORNO=125
 * no printer installed
   llError = .T.
 
  CATCH TO loException
 * other error
   RAISEEVENT(THIS,'ERROR',m.loException.ERRORNO,m.loException.PROCEDURE,m.loException.LINENO)
   llError = .T.
 
 ENDTRY

>Hi Lutz.
>
>I don't know what VFPA is...
>
>I only know a few weeks ago I used "SET REPORTBEHAVIOR 90" and I almost commit suicide.
>
>I fixed it with
>
>SET PRINTER TO GETPRINTER() before report and deleting "prompt" from the instruction REPORT FORM.
>
>Thank you anyway.
>
> Héctor
>
>PD. The monitor????