No worries mate...actually you might be best waiting a week or two, the steam summer sale will be on soon and arma 2 should be 50% to 75% off.
thats even better il wait thanks for ur help
I play it and I only ever bought Arma Operation arrowhead (and the PMC and Brit army DLC's). To play it with just arrowhead though I had to download the free version of ARMA II and move a few files over in to my arrowhead install. Theres clear instructions on how to do that over on the steam forums.