Where can I find the GUID or ProductID of a piece of Software?

I need to write a VB Script that Uninstalls the Dell wireless WLAN Card utility, Installs the wireless card driver, and configures the wireless for the machine. I have to do this for 160 machines so I believe a script would be soooo much easier then doing it manually on all the machines. Is this possible? or should I just suck it up? lol

Any and all help is appreciated!