msn help please

(had new windows live but preferred the old messenger so i downloaded old version of messenger)i get this now when i when I logged into MSN Messenger saying that if I wanted to update, I must log in as a local administrator. Now I can't even log in at all, because I get the message:

"You cannot sign into MSN Messenger because you are using an old version of MSN Messenger.

Note: To upgrade MSN Messenger, you need to log on to this computer as a local administrator."

What the heck does this mean i am the administrator, and how do I get MSN Messenger , thanks

 

You need to uninstall windows live. as this is causing conflicts.

iain.t :major

 

that was done before i installed the older version , anybody any ideas