I have the PMDG B737-600/700 NG and I was wondering if anyone know of any site where I can download and update the actual AIRAC of the FMC. I am aware that I could manually create SIDs and STARs but I think it would be better to get something like an AIRAC to update it.
You could try http://www.navigraph.com/
It's worth a look, though not free and I'm not sure they'll have everything you're looking for.
I've had a look at that before. Would prefer some freeware software or download if possible.