Question about tweaking an option

I am using the following:

{author_sort}/{series}/{series_index:0>3s} - {title}/{author_sort} - {series} - {series_index:0>3s} - {title}

is there a way to save it to a specific drive and directory ex. H:\books? I would then like it to take the first letter of the author's last name as the name of the main book folder ie "H:\books\A\Axel, James\deathlands ...."

And help would be great.