Not From home/Office access to i5

["Mark Allen" <scprideandms@xxxxxxxxx>]

I am looking into way(s) to access our i5 when I am not at home or the
office.  We use Verizon as our corporate cell phone provider.

All we really need is a way to check running jobs, answer error messages, do
some quick queries/checks on user setup (mostly in data files), maybe (?)
make some quick code changes, etc.  We can access our i5 either thru a
direct dial # into the network, RAS? (so my boss says, I've never tried it,
guess I shoudl from home) or via Citrix over the internet.  Key issues would
be cost, reliability and ease of use.  I am thinking a PDA type device?
Recommendations/warnings would be appreciated.