WAOi flight plans are FS9 format, MS did this stupid thing, which we dont know why, bur if you use FS9 flight plans with FSx ones the FSX planes wont show up. So to fix this you need to convert all the WOAI plans to FSX. There are a couple of utilities that do that. But from what I have read on WOAI they are going to do an installer that will automaticaly do that for you.
You just need to look.
AMD Vishera 6300 Hex @ 4.56 Gig, Asrock 990FX Extreme 3, Gigabyte GTX 680 2Gig GPU, 8 Gig Cas 9 1600 Mhz ram, Win 7 64 Bit