I assume you mean the Flash Player plugin for Internet Explorer, but is this IE7, IE8, or an earlier IE?
If it is IE7 you can try disabling the plugin, and then deleting it from within IE.
Open IE, goto Tools and select "Manage Add-ons > Enable/Disable Add-ons". In the Manage Add-ons window, select "Add-ons that have been used by Internet Explorer" from the "Show" list.
Scroll down to find any Shockwave entry, there could be more than one, and disable them. Then delete them. Close down IE, restart it, and go back into Manage Add-ons to see if they have been deleted. Then try installing the plugin again.
If that fails in IE7, then you could Reset the browser to its default settings, Tools > Internet Options > Advanced tab. But this will lose all your web site password/username details stored in IE, as well as history, cookies, and favorites.
I have tried to uninstall Flash by using the Flash Uninstaller at the link below..
uninstall_flash_player.exe (205 KB) (updated 2/24/08)
But the progress line hangs a little bit before the end.
I tried to apply the following, but to no avail,
any help will be appriciated..
Internet Explorer ActiveX settings
Browser security settings should be chosen by you or by your system administrator. For single users who do not have an administrator, the Medium: Default Level allows you to view Flash content. For any Custom Level, ensure that both the "Download Signed ActiveX controls" and "Run ActiveX controls and plug-ins" options are set to "Prompt".
To change your security level:
Open Internet Explorer.
Choose Tools > Internet Options.
Select the Security tab.
Select Custom Level.
Find the section "ActiveX controls and plug-ins".
Set ' Download Signed ActiveX Controls' to Prompt.
Set 'Run ActiveX Controls And Plug-ins' to Prompt.
If you are having trouble installing, make sure that your Internet Explorer security level is not set to High or to a custom level that does not allow viewing of ActiveX controls