Be polite, be professional and reply stating:
"Absolutely, if you install WinUAE and a Kickstart ROM on Windows first. I will be happy to provide you with ADF files of the actual floppy disks for a small additional fee ($50) should you win. For $100 extra (to cover my time and extra postage) I'll even throw in an old copy of Amiga Forever."
I'm sure he'll take you up on such a generous offer. ;-)