I have a Dell windows xp home, dual core, 1GB ram with 145GB of memory computer that is having troubles. Out of the blue, everything i click on opens the open with window and gives an error message like this; C:\WINDOWS\system32\rundll32.exe Application not found. When i try to open up Internet explorer it brings me to open with and i open it with internet explorer, it opens then closes right after and brings me to my Admin folder. I did nothing wrong, it just happened, PLEASE HELP