How To Get Windows Firewall Working?

[XChamp]

I vaguely remember turning off Windows Firewall a while back and now, since I have a much larger bankroll in online accounts, I'm a little worried about security. The problem is that I can't turn it back on. When I open it up in control panel there are two main options to select under the "General" tab: 'On' and 'off'. It's on 'off' right now but everything is grayed out so I cannot select 'on.'

I am on as an 'administrators' user group. I have tried changing it on my other 'administrators' user group account and it still does not work. There is only one other user account and that is user name: 'ASPNET' group: Users. I don't know what that user is or how it got there. Could this be a problem, or is this a completely different issue?

Anyone have an ideas?

Thanks