Code? Is this for a retail card or a retail CD? Can you tell us please what it is you are trying to install - the actual full name of the suite please?
Actually I can give you all the links:
You can use the below link to activate the corresponding McAfee product using the Key provided. Alter your country using the drop-down menu accordingly.
http://www.mcafee.com/mtp/retailcard (McAfee Total Protection)
http://www.mcafee.com/mis/retailcard (McAfee Internet Security Suite)
http://www.mcafee.com/mav/retailcard (McAfee Antivirus Plus)
Once you activated the product you can use the below instruction to login to McAfee account and install the products.
or for the RetailCD version:
http://www.mcafee.com/mav/retailcd for mcafee virus scan plus
Redeemed the product key. Log in if you have an existing account with mcafee if not click register now.
Do the onscreen prompt to download/ install.
i cant install my internet security card i have tryed everything
What operating system and service pack (if applicable) is this, and what version of Internet Explorer is installed (even if you don't use it we need to know that) ?
Have you had any other security software installed previously?
What errors are you getting and havr you tried the links posted above?