OK,
Easy enough.
your old export is a big string.
To split each row of this into a seperate row in an array, simply run
$array = $oldstring.split("`n")
(that is a backtick, top left of UK keyboard, not an apostrophe next to the n)
You can now cycle through each row in the array (and split it or whatever you fancy)
e.g. if you'd like to split the fields frther, run:
foreach ($row in $array){ . . . .
can provide more code if you need, but this should get you on your way - look at the various code options above, or add-member for the last piece of the puzzle.
good luck