I have a Windows console program which collects 4 strings. How hard would it be to either have the program send an email or connect to a URL (either by POST or GET)?
Well, you've linked this thread as C, so you'd need a C library for email in order to send email, here is an SMTP option (there are others probably better ones too) http://libsmtp.berlios.de/
or C++ you'll also need to go locate a valid library.