My PC has crashed repeatedly in the last 24 hours. For a time we could not even get IE or AOL browsers to load at all, if they came up, they soon crashed. We got error messages indicating the computer was running slowly. Lots of strange error messages. I have one now which says "Rundll32 has caused an error in <unknown> Rundll32 will now close. If you continue to experience problems, try restarting your computer." We deleted some strange programs that somehow got onto our PC last night. Since then there has been some improvement. Our Norton antivirus is dated 2001, so obviously we are at risk of viruses, which I think is what happened. Any suggestions on how to proceed both to address the Rundll32 error message and update our antivirus protection would be greatly appreciated. We have been lax in protecting our PC and now we are paying the price. But we don't know much about how to go about fixing the current issues or prevention of future problems.