can anyone recommend a GUI based software tool to scan windows 7 pcs on a network please?
I am looking for something to check what adobe reader/java/flash player versions are on the windows 7 machines..
Network Auditing software is plenty. If you're looking for something free, have a look at Open-AudIT or OCS Inventory.
Or spiceworks - it can do a helluva lot more than just tell you what version apps are on the machines, it's well worth a look. It can be a helpdesk for you too, it's great to be able to connect helpdesk tickets to specific machines.