Ok the board drivers are what we call chipset drivers.
It will install the chipset, intel or amd, it will instal ide drivers (for hd) even sata (usually the windows also have them).
For video cards well.....here we go you need to open your pc and locate the card, wich will be very easy since your monitor is connected to it.If they are from nvidia for eg. you dont need to unistall the drivers you have because it will work ( sometimes), if you have a nvidia and the new one its an Ati then you need to go to control panel , add and remove software and uninstall the drivers.After you put the card on if it is an ati, usually your windows will give you the message of "new hardware found" click cancel when he tells you to install drivers. Insert the cd rom that cames with card and let it auto run (if not auto run go to start , my computer click on your cd rom)follow the instructions.If the new card is a nvidia and the old one too windows will accpet the old ones, but that doesnt mean you dont need to update them.
When somebody tells you to get the latest drivers its because newdrivers are always caming out, ad he new one usually fix many things. Just got to Nvidia or Ati and look for the drivers for you card.then you just need to run them ususally if they detecte old drivers first they will remove them.But to be honest i dont think this is the reason for your Flight Sim to lock.I guess its a configuration problem.
I hope it helped, keep me posted if i can give you any more assistance.
Cheers

PS with a pc like that why you want to change anything, i would kill for a video card like yours.