I'm trying to remove Trend Micro PC-cillin from my computer and the following window appears:

 Windows installer, the feature you are trying to use is on a network resource that is unavailable. Click ok to try again, or enter an alternate path to a folder containing the installation package "PCCDELL.msi" in the box below.  The box below contains the path C:\Dell\TF978\setup\.  Any input as to where I can find this would be appreciated.  Thank you.