How to install Adobe activex and check its compatibility?

Hello experts,
I am here to explain you my problem and want you to give me the best solution. I am using a P4 computer with Microsoft Windows XP operating system. On my internet explorer I tried to open a video, But it displays an error that you need to update the flash player.My internet explorer is 64bit. I updated the software but the problem still exists. How Can I check and install adobe activex compatibility? Any ideas and suggestions to resolve this issue?
