You might be searching the link under yahoo search.
You can try :
Windows XP :
Click Start -> Run -> Type the Link www.mcafee.com/mavw/retailcard
Click on Ok.
Windows Vista :
Click on Start -> Start Search ( right above the Start button ) -> Type the Link www.mcafee.com/mavw/retailcard
Push Enter on your keyboard
The above should take you to the McAfee website.
Contact mcafee chat from http://service.mcafee.com/LocaleSelect.aspx?lc=1033&sg=TS&pt=1&st=CHAT they will be able to find out your subscription details and help you to install the program.
note:moving thread to security center 9 2009