It will not let me download msn HELP?

Why wont my laptop let me download anything to it?

• My sony vaio laptop will not let me download aything on it such as macafee antivirus, the new msn or anything else. It says somethig about digital signature required, so when it says that it gives me an optio to install certificate, i do this and still o joy. Its really peeig me off now, my friend said it could be something about being an adminstrator on my computer but i dont kow what hes on about, any help guys would be appreciated Thanks. It has windows vista premium and my lap top is a vgn nr38e..

• Answer:

  In terms of what your friend was talking about... The easiest way to check is to go to Control Panel > User Accounts and check if your account is an administrative account or just a user. Administrators have privileges for everything, but Users have limited privileges, so that MAY be the problem. Nothing else is coming to mind, so you might want to call Sony or do some more research on the internet if the above doesn't solve your problem.