Henry,
While it's not trivial, it's also not rocket science. Using the information that is available:
1) On the 7/8 CD (VFPDEPLOY.DOC)
2) The Whil Hentzen article that was in FoxTalk - "'Where is the Setup Wizard?' and Other Annoying
InstallShield Questions !" now at http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnfoxtk02/html/ft02a1.asp.
3) Mike Stewart's MSDN article 'Walkthrough: Creating a Visual FoxPro Application Setup Program Using InstallShield Express' at http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnfoxgen7/html/vfpdeploy.asp.

Note: While the two articles refer to the VFP 7.0 version, the 8.0 version of ISE is virtually the same - just easier and more flexible in places!

Rick