LyX on Windows Vista

[Max Bian]

I am using 1.53 on Windows Vista. I found pdflatex easiest to get what I 
need. However I have two problems with it:

1. When I do view->PDF(PDFLATEX), it will ask me if I want to create the 
directory for the output files. Is there a way to remove this 
unnecessary user input?

2. If the pdf is open in Acrobat, the update would fail. Is there a way 
to avoid this?

Thanks.

Max