latex commands

[Guldo K]

Hello.
This could be asked before, but I couldn't find
it googling the group...
So, it's about AUCtex.
When I press C-c C-c for the file I'm editing,
I'm pronted with the default LaTeX command.
Then, the default is View, with xdvi.
I'd like to:
1) set the first default to be "LaTeX PDF";
2) let "View" change to "xpdf <filebasename>.pdf"
if the last successful command was LaTeX PDF.
2bis) otherwise, set up a "View PDF" command set
to default when "LaTeX PDF" is successfully ran;
though the combo LaTeX-View should still work
(automatically).

Hoping I expained this clear enough,
can you help me?

Many thanks,

*Guldo*