>>>Looking for the best way to automate the download and install of VFP upgrades on client’s servers / pc’s thru internet. Any suggestions will be greatly appreciated.
>>
>>.NET ClickOnce ?
>
>not sure what that is?

Basically designed to update .NET apps but can be used to push out other files although you'd probably need a .NET wrapper for best results. I think all the main installation apps also offer a web update option. I know Installshield has one - but the .NET option is free....