Ok I installed the AA demo and got the D3Dx9_30.dll error well I fixed that part got into the game and went to connect to a server and it would say connecting.... then connecting failed and that is it. I can see servers but any time I try to connect to one it just says connecting failed. I am behind a router but I have the demo on another computer and it runs just fine. I also had a firewall on so I approved ArmA demo and that didnt work so i disabled it and tried agan and that didnt work. So I came here to search for a solution but I didnt see anyone with the same problem. I have tried reinstaling it and deleting the 2 my documents folders and the registry of ArmA and no luck. so I am making a post about it now as a last resort. system specks are as follows.
AMD Athlon 64 bit 3200
Asus motherboard A8N-E
ATI X1600XT 256
512 ddr.