I have a project I want to get on with for ArmA 2 and I want to use Blender as I find it far superior to O2. I can't wait to use these export/import files. Thank you very much Sanctuary. You're a star mate.
Update - I put the files in the correct location as per your instructions in the PDF tutorial but I received this error when I attempted to import "BISoldier.p3d":
http://i.imgur.com/nh7tEDG.jpg
Second update - I used the model you provided with the tutorial and it worked. The other one I tried was for ArmA 2, should there be a major difference? Seeing as they're both in .p3d format. Thanks again!