Hi Fellas

As usual I am looking for some guidance.

I have just done a clean installation of Vista Home Premium and downloaded adobe 8 to read PDF files.
I downloaded to desktop, but when trying to open PDF files it tells me that the system is already running and cannot operate more than once. Indeed via Windows Defender the programme is listed as "currently running", but I am unable to close it.

Any suggestions


regards as always

Cluless