>I can't find a way to get InstallShield Express to install msacal70.ocx. It's the older of the calendar control, but I don't have time to switch it out. The only thing I can find on the web is this http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnfoxgen7/html/vfpdeploy.asp which to be honest I don't understand.

AFAIK, The calendar control is in mscal.ocx. I'm not sure what control you're refering to.