Steam Version of FSX

My "vista" computer crashed and burned (actually the mother board expired) and it was
not cost effective to have it fixed.
I have experienced a problem reloading FSX and may have to obtain a new set of FSX disks.
Since that is the case it might be worth while to get the Steam Version instead.
When changing to "Steam" does it require the use of the original FSX disks or is it
a complete new deal from the ground up ? Does it use acceleration ?
Trying to make an informed decision here.
not cost effective to have it fixed.
I have experienced a problem reloading FSX and may have to obtain a new set of FSX disks.
Since that is the case it might be worth while to get the Steam Version instead.
When changing to "Steam" does it require the use of the original FSX disks or is it
a complete new deal from the ground up ? Does it use acceleration ?
Trying to make an informed decision here.