Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.
I agree with Expat - the RAZBAM series of skyhawks are very good - and ported over to FSX fly just fine. I have volume's 1, 2 and 3 which cover the A-4A, A-4B, A-4C, A-4E, A-4F, TA-4J, plus a number of the non-US Navy models. I recall having to modify some of the panels and sounds - but they really represent a great opportunity for FSX flyers.