bill the bus

Hi, some help required please. My CPU is running at almost 100 % most of the time. I have run the performance monitor and it shows that WksCal.exe 7320 1 1 30.9 2.1 33.0 Service Launched Used Kernel CPU% User CPU% CPU% WksCal.exe 3152 1 1 18.1 1.8 19.8 Service Launched Used Kernel CPU% User CPU% CPU% WksCal.exe 5628 1 1 18.2 1.2 19.5 I have tried stopping startup but cannot find it listed and tried to uninstall but am told i cannot without a disc. Have researched WWW but cannot find anything to inform how to stop the calendar running or even remove altogether as i do not use. Can anyone help please. TIA