Ron,

You can use directory based authentication in IIS. But this is optional.

Let us assume, your web update is named update.exe. Then you have several "cluster" files, e.g. update.00001, update.00002, update.00003, etc.

If you upload it to www.pdmg.com/htm then the direct download address would be:

www.pdmg.com/htm/update.00001

Friedrich