Hey Mark,
Is this possible?
Yes. We have a number of customers using wyUpdate like that.
And, how do I do it.
Well, following the step-by-step walkthrough is the best way to start.
Also if you want to run wyUpdate.exe from the root of a drive, and you don't want wyUpdate to prompt for permission (UAC prompt), then you have to give "regular users" full access to the drive (set the apprpriate ACL settings).