When I open my swf file inside Internet Explorer, it automatically blocks the file and asks me if I want to allow access to the file. Is there anyway I can stop the blocking? ( at top )

This occurs when you are using Windows XP and have installed Service Pack 2, as Microsoft Internet Explorer's security feature prevents ActiveX objects from executing locally. This problem happens on your local PC only and once you have uploaded your flash site and view it online, the error messages will not appear.

How do I know if I have installed Adobe Flash Player? ( at top )

You can check with your Flash player versions by following this link:
http://www.adobe.com/shockwave/welcome/

How do I get Flash player if I don't have one? ( at top )

For Internet Explorer and Mozilla Firefox users, it will prompts you automatically to install Adobe Flash Player. Simply follow the on-screen instructions for installation.
If you are using other browsers, you can get one from Adobe's website.
http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash&promoid=BIOW