installed the fedex shipping module - works very well and makes my fedex sales rep extremely happy...but i would love to add one tiny little touch to the module - and would love someone's input as to how.
FEDEX priority overnight and FEDEX 2-day both offer a saturday delivery option (where the customer will receive it on saturday), but that is not included nor quoted when the module gets the price quotes from the FEDEX server. in a nutshell, i'm noticing that FEDEX charges a basic $20 extra or so to deliver on saturday - no matter the service selected.
so...instead of trying to add two new shipping options in there, i though it might be MUCH easier to just add a "PLEASE DELIVER ON SATURDAY" checkbox to the module (under PRIORITY OVERNIGHT and 2-DAY only) that simply adds $20 to the shipping cost. that way if they don't actually want it on saturday - they don't have to have it...but of course most do - so they'll get the extra $20 charge by checking the box.
i can get around in php...but i don't wanna break the heck outta my site right in the middle of the busiest time of the year. anyone have an idea what to look for? or know an easy way to implement this? would very much appreciate any hints!!