How do I log on while in flight?

[Scott Weeks <surfer () mauislanwanman com>]

I was wondering if any of y'all could give me pointers to services I could
use to log into a network during flight on a private airplane. For example
a person is in flight cross-country and needs to do a videoconference,
send email from his network to interested parties, or any of the normal
things we do from the ground.  Is this possible or would it interfere with
the plane's other systems?

scott